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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.1090 by jmc, Wed Apr 22 19:25:06 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
8      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
9    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
10      to reduce length of 1.D array print in STDOUT.
11    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
12      + use 48 tiles (16x8): this will allow to test "blank tiles".
13    o start to test MPI + multi-threaded (change testreport to skip tests
14      where number of tiles do not match).
15    o genmake2: add option "-omp" to turn on Open-MP ;
16      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
17    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
18      and keep the original tile numbering. Note: compatible with old
19      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
20    
21    checkpoint61l
22    o Overlaps had been forgotten in calculating ijk keys : fixed
23    o fix cyrus makedepend for gcc 4.4
24    o experiment fizhi-cs-aqualev20:
25      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
26      and generate new output. Note: new output is much closer to the old
27      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
28      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
29    o pkg/fizhi:
30     - change to avoid indices going deliberately over array-bounds
31     - remove unnecessary MPI stuff
32     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
33     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
34       does not go over array-bounds and therefore returns reliable output.
35     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
36       this S/R has 4 output arguments, which are used inside "get_alarm";
37       when it is called with the same variable "ndum" in place of several
38       output arguments, this produces weird side effect inside "get_alarm"
39      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
40       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
41       address) and produces error.
42    o tools/gemake2: (March 27-29 2009)
43      with option "-mpi": link *_mpi files from "MODS" dir (this is what
44      testreport does).
45    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
46    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
47       update lab_sea.lsr & lab_sea.salt_plume results
48    o pkg/seaice:
49      Major overhaul of the LSOR solver: change discretization from original
50      finite differences to finite volume. The old routine is still in the
51      file seaice_lsr.F and can be turned on with the CPP-flag
52      SEAICE_OLD_AND_BAD_DISCRETIZATION
53      Along with this change, the discretization of the strain rates is changed.
54      The same flag turns on the old discretization in seaice_calc_strainrates.F
55      All verification experiments with seaice are affected (except for
56      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
57      results by setting the above flag.
58      Further changes involve changes in defaults:
59      - ALLOW_FLOODING is defined and turned on by default
60      - SEAICEadvSnow = .true. is now the default
61      - SEAICEadvSalt = .true. is now the default
62      - SEAICEadvAge  = .true. is now the default
63      - SEAICE_clipVelocities  = .false. is now the default
64                                         (as per J. Zhang's recommendation)
65      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
66        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
67      - seaice_growth: replace computation of UG by a simple copy from wspeed
68    
69    checkpoint61k
70    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
71      seaice_lsr: fixed a few metric terms,
72                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
73                  add more debugging diagnostics
74      seaice_evp: removed superfluous many metric terms of FV discretization
75                  of stress divergence
76                  affects lab_sea, lab_sea.hb87
77      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
78                  of stress divergence for non-evp solver
79                  (this part is not tested anywhere)
80      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
81                  they were effectively only half slip
82                  affects lab_sea.hb87
83      updated all relevant verification experiments (except lab_sea//output_adm.txt
84        which was left over, but fails at level 7 & 6)
85    
86    checkpoint61j
87    o pkg/seaice: turn a few hard wired parameters into run time parameters
88    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
89      time in seconds as promised by the usints in seaice_monitor and exf_monitor
90    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
91      that are not cubed-sphere grids
92    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
93    o pkg/ctrl:
94      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
95    o non-hydrostatic (calc_gw.F):
96      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
97      update output of exp. global_ocean.cs32x15.viscA4
98    o remove backward compatibility for thetaMin,phiMin
99      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
100    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
101      interpolated wind field not only for curvilineargrid=.true., but also
102      for a rotated grid (rotateGrid=.true.)
103    o pkg/exf: add capability to bypass interpolation for runoff
104      by setting yet another CPP-flag
105    o eesupp/src, B-grid exchange:
106      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
107    o autodiff
108      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
109      allows to switch to single-prec common blocks;
110      corresponding switch occurs in tamc.h, integer isbyte
111      TAF store directivs "byte" and "kind" seem equivalent;
112      Most tamc.h have been updated correspondingly.
113    
114    checkpoint61i
115    o autodiff:
116      fix autodiff_sore/_restore indices for obcs
117      (spotted by I. Hoteit, M. Mazloff)
118    o pkg/autodiff, pkg/ctrl:
119      Add flag to reduce all tapelev I/O to single-prec.
120      In data.ctrl set
121        doSinglePrecTapelev = .TRUE.
122    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
123      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
124    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
125      real fresh water flux (not yet)
126    o pkg/mdsio & rw:
127     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
128     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
129    o pkg/flt:
130     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
131       init_fixed & ini_varia.
132     - clean-up & simplify linear interpolation S/R:
133       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
134     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
135     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
136     - add vert. coordinate & horiz. indices to output files.
137     - change vertical position in initial condition, from index to depth [m].
138     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
139       (easier to get to a curvilinear grid) ; delX,delY no longer used.
140    o pkg/ggl90: a few modifications:
141     - fix bottom boundary condition, and interpolation of KappaE
142       near top and bottom
143     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
144     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
145     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
146    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
147      (maintain temporary backward compatibility, until next checkpoint)
148    
149    checkpoint61h
150    o pkg/diagnostics with "periodic averaging diagnostics":
151      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
152    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
153    o pkg/obcs: fix loop ranges for balancing code
154    o pkg/flt:
155     - improve criteria for finding which tile owns a float.
156     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
157    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
158      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
159      with ocean biogeo)
160    o pkg/flt:
161     - do some cleaning and fix the restart ;
162     - add output.txt in flt_example/results to get this pkg tested.
163    o genmake2: add an EXTENDED_SRC option and flag.
164       for now, cannot be turned on on command line (only through genmake_local)
165    o pkg/mdsio: read/write vector:
166     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
167     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
168       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
169     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
170      (drop to 4 digits matching for grad). But this test does not look very
171      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
172    
173    checkpoint61g
174    o pkg/flt:
175      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
176       + make OPTIONS file more standard.
177      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
178      - fix _BYTESWAPIO CPP-Flag
179      - standard reading of file-parameter "data.flt"
180      - fix argument list of S/R FLT_RESTART
181      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
182    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
183    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
184      a still unfixed compiler/optimization bug
185    
186    checkpoint61f
187    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
188      update results of global_ocean.cs32x15.icedyn test.
189    o move getcon.F from model/src to pkg/fizhi.
190    o pkg/exf: add parameter for extrapolation of temp up to the surface
191       and option to prevent negative evap (in bulk_largeyeager04 only).
192    o Prather Advection scheme: fix tracer conservation for divergent flow
193      (e.g., when using NonLin Free-Surface).
194    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
195    o gmredi (Visbeck-variable-K):
196     - add more parameters to Visbeck-variable-K.
197     - use a 5 points average for dSigmaR in Visbeck-K calculation
198       (more "homogenous": same stencil and same weights as in dSigmaH)
199     - update output of ideal_2D_oce experiment.
200    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
201      (#undef REAL4_IS_SLOW)
202     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
203       coordinate variable
204     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
205       (surface forcing fields), removes some of the functionality
206     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
207     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
208       probably not all: copy _RS surface flux fields to RL field before
209       calling DIAGNOSTICS_FILL
210     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
211       real*4 (CALL EXCH_*_RS) versions.
212     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
213       (generate new output).
214    
215    checkpoint61e
216    o gmredi (Visbeck-variable-K):
217      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
218      - change computation of Visbeck-K where Slope > Smax :        
219        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
220        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
221    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
222      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
223    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
224    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
225      does not become too large (to avoid precision problems in implicit-diffusion
226      solver); update ideal_2D_oce output.
227    o pkg ggl90:
228      - in ggl90_cal.F: compute only one set of visc/diff, used to
229        step forward TKE/T/S/momentum
230      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
231        have Prandlt =1)
232    o gmredi (fm07):
233      - add lower limit on Transition layer thickness + lower limit on 1/lambda
234      - allow to set few more params from data.gmredi
235    o pkg ggl90:
236          - add missing sqrt(2) factor in computation of mixing length
237            scale in ggl90_calc.F
238            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
239    
240    checkpoint61d
241    o adjoint modifs
242      - adapt to new field rhoInSitu
243      - allow to revert from StoreDynVars2D, StoreDynVars3D
244        to individual fields
245        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
246    o store 3-D (in-situ) density in commom block (DYNVARS.h)
247     - save 1 rho computation.
248     - no longer modify T & S inland when using down_slope pkg.
249    o gad_som : allow to switch to SOM advection for T & S without corresponding
250      pickup files (using new S/R: MDS_CHECK4FILE).
251    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
252      (for useSingleCpuIO to work in multi-threaded)
253    o pkg/shelfice:
254     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
255       with SHELFICEtopoFile in data.shelfice
256     - move code for reading ice shelf topography and modifying hFacC into separate
257       subroutines of the shelfice package
258     - separate initialisation of "fixed" and "variable" variables
259     - kTopC is not (yet) replaced by kSurfC, although this is possible
260    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
261    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
262      and rename:
263      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
264      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
265    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
266    
267    checkpoint61c
268    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
269      to add mass source/sink of fluid in the interior (3-D generalisation
270      of oceanic real-fresh water flux).
271    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
272    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
273    o new pkg: down_slope
274      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
275      - presently, modify T & S inland (dwnslp_calc_rho.F).
276        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
277      - implementation for ocean in P-coords not tested.
278      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
279    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
280      (to facilitate conversion of oceanic pkg to p-coordinate).
281    o change FIND_RHO to FIND_RHO_2D :
282      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
283    o new pkg: cheapaml
284    
285    checkpoint61b
286    o exch2:
287      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
288      - no longer depend on the order sequence (N,S,E,W).
289      - 3rd exchange no longer needed (tested with 24 tiles).
290      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
291      - exch_UV_A-grid readily available (but not yet tested).
292      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
293      (both are no longer needed) in exch_uv: no effect in forward run; but
294       get truncation error differences with adjoint exch.
295    o exch2:
296     - change index-bounds storage (moved from target to local tile,
297       more intuitive this way) ; rename/remove some variables.
298     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
299    
300    checkpoint61a
301    o exch2/matlab-topology-generator:
302      fix bug in index bounds for N-S internal exchange (hard to tell if this
303      had any effect on the solution).
304    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
305      is exceeded
306    o testreport: modify syntax of awk, so that it works also with
307      awk, and not only with nawk and gawk
308    
309    checkpoint61
310    o autodiff
311      Change default for TAF usage by removing argument '-nonew_arg'
312      This changes TAF subroutine argument list (ordering of active var.)
313      Omission of this flag leads to incompatibility w.r.t. TAMC
314      To restore TAMC-compatibility, need following modifs:
315      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
316      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
317      Tested TAF version is 1.9.22
318      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
319    
320    checkpoint60
321    --->>> This is the last checkpoint for which generating the adjoint
322    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
323    --->>> by default.
324    --->>> Future checkpoints will ommit this flag by default.
325    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
326    o pkg/grdchk: Add gradient check to etan0 perturbations.
327    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
328    o pkg/autodiff: more flexibility in zeroadj.
329      model/src: modifying do_oceanic_phys.F accordingly.
330    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
331    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
332      special setup of gmredi for which the adjoint is stable
333      enough for parameter optimization.
334    o bridging the gap between eddy stress and GM.
335      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
336          along with a change in CPP option (now ALLOW_EDDYPSI).
337      -> when using GM w/ GM_AdvForm:
338          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
339          is applied either in the tracer Eq. or in momentum Eq.
340          depending on data.gmredi (intro. GM_InMomAsStress).
341      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
342      The key modifications are in model/src/taueddy_external_forcing.F
343      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
344    
345    checkpoint59r
346    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
347      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
348      fix option to read coriolis(@ cell-corner) from files with CS-grid.
349    o pkg/mnc: add some attributes to standard 1D-coordinate variables
350    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
351      mass points, when using mnc for output
352      - add runtime parameter (missing_value, missing_value_int) to override
353        default (which is the value of getcon('UNDEF'))
354    o pkg/mnc: prepare mnc for the actual use of missing values with the
355      diagnostics package: small fix in mnc_cw_readwrite.template and more
356      initialisation of never used fields
357      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
358      versions
359    o pkg/thsice/thsice_ini_vars.F added default initial values so that
360      thermodynamics sea ice solver does not blow up when some initial fields
361      are missing.
362    o move from external_forcing_surf.F to ini_forcing.F
363      the p-coord. hack consisting in using pLoad to set phi0surf ;
364      update output of tutorial_global_oce_in_p (affected @ truncation level).
365    o Freshen up a bit hs94.1x64x5, notably:
366      remove rotationPeriod and tRef=5*0. (adjoint only), and add
367      exactConserv=.TRUE.
368    o pkg/generic_advdiff:
369      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
370      applies to files where Temperature & Salinity 2nd Order moments are used.
371    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
372      this uses a dynamically allocated internal state data structure
373      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
374      and requires a fortran 90 compiler
375    
376    checkpoint59q
377    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
378       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
379    o Refresh tutorial_global_oce_biogeo, notably:
380      - change bathymetry (put back seamounts in ACC, use hFacs)
381      - change EOS (POLY3 --> JMD95Z)
382      - use Bryan-Lewis vertical diffusivity
383      - use multidimensional advection
384      - remove old virtual virtual in dic pkg, now done through ptracer pkg
385      - change a couple of parameters in dic pkg
386    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
387    o pkg/obcs: change default to OBCSfixTopo = .true.,
388      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
389      - replace "debugMode" with "debugLevel .GE. debLevB"
390    o implementation of TAF directives for gchem,cfc,dic
391    o remove "exp5" (replaced by tutorial_deep_convection).
392    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
393      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
394      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
395      --> changes results in exp4, seaice_obcs
396    o tutorial_deep_convection :
397      update the set-up and increase resolution and domain size ; start
398      from pseudo initial conditions = output at t=120mn in order to see
399      something happening when running testreport.
400    o pkg/seaice: add os7mp as an advection scheme
401                  add check for advection schemes
402                  add a flag for restoring T and S underneath sea ice
403    o pkg/my82: add netcdf-support and diagnostics
404    o thsice pkg:
405      - Now hsMax limits snow height by turning it into ice following
406        flooding scheme (and now conserving energy)
407      - Slight rewriting of the formula in thsice_calc_thick.F
408      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
409      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
410    
411    checkpoint59p
412    o gchem / dic / cfc :
413      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
414      - add new parameter files: "data.dic" & "data.cfc" ;
415      - various re-arrangement in initialisation & header file ;
416      - fix tutorial_global_oce_biogeo for multi-threaded test.
417    o pkg/dic: test for "pickup_dic" file when restarting ;
418      if no pickup-file, can restart with a re-initialised pH (same as it did
419      before) providing pickupStrictlyMatch is set to False.
420    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
421      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
422    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
423      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
424    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
425     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
426       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
427    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
428       scheme to use for vorticty-term ;
429     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
430       (with default selectVortScheme, return to original discretisation)
431     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
432    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
433    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
434      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
435      also fix diagnostics VISCAHW & VISCA4W.
436    
437    checkpoint59o
438    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
439    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
440      move a few statemens out the main loop into separate loops
441    o pkg/shelfice:
442      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
443        (kg/m^2/s), does not break tests, because in verification/isomip,
444        rhoConstFresh=rhoConst (by accident)
445      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
446      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
447        new file model/src/seawater.F, so that they are available for all pkgs.
448      - convert potential temperature into in-situ temperature. This changes the
449        isomip tests => update tests
450    o add a flag writePickupAtEnd (default=true) to be able to suppress
451      writing a pickup at the last timestep
452    o tools/mpack-1.6 :
453      - disable automake (not working) and autoconf (not needed).
454      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
455        also cleaner with much less compilation warnings.
456    o pkg/profiles:
457      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
458      (for "less than 32 characters name" compiler requirement)
459    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
460      conditions that have a different sampling frequency than S/T/U/V obcs
461    o pkg/diagnostics (stats-diags):
462      - fix global Min/Max in case 1 processor get only empty tiles
463    o genmake2: replace (4 times)
464         make genmake_tc_1.o >> genmake_warnings 2>&1
465      with
466         COMM="$CC $CFLAGS -c genmake_tc_1.c"
467         echo $COMM >> genmake_warnings
468         $COMM >> genmake_warnings 2>&1
469      to make genmake2 always see the value of CC as specified in the optfile.
470    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
471      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
472      - modify verification advect_cs test to test SOM-advection on CS-grid.
473    o pkg/ctrl:
474      - Rewrite of ctrl_map_ini_ecco.F,
475        introducing a generic routine (ctrl_map_ini_gen.F).
476      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
477    
478    checkpoint59n
479    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
480      number in dedicate array "hdiag":
481      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
482        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
483      - many small changes (integer format) for large number of diagnostics
484      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
485        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
486    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
487      usingSphericalGrid, this allows to define the rotated grid coordinates
488      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
489      geographical coordinates according to the inverse of the rotation defined
490      by the Euler angles, so that Coriolis parameter and online-interpolation by
491      exf works with the geographical coordinates on XC/YC/XG/YG.
492      Naturally, this feature does not work with all packages, so some
493      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
494      profiles), because there the coordinates are assumed to be regular
495      spherical grid coordinates.
496    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
497      - introduce isopycnal diffusion coefficient control.
498    o tools/adjoint_options:
499      - additional control vector components.
500    o pkg/mnc: have mnc create marginally meaning full coordinate variables
501      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
502    o pkg/mypackage:
503      - add example of read/write pickup for state-var ;
504      - add entry points to the main code for state-vars diags & write-pickup.
505    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
506      transitions for useExfYearlyFields
507      - add new subroutine that determines the file to read from for
508        use*YearlyFields = .TRUE. and .FALSE.
509      - add a verification experiment to global_with_exf that tests
510        useExfYearlyFields with USE_EXF_INTERPOLATION defined
511    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
512      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
513      subroutines (which could be generated from a template, because they are
514      almost identical), for now they are included in obcs_prescribe_read.F for
515      simplicity
516    o pkg/exf:
517      - add a little more diagnostic to exf_interp_read (in analogy to
518        mds_read_field, can be turned off with debugLevel < debugLevA=1)
519      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
520        ugly but fast by unrolling short inner loops, inserting a unroll=8
521        directive in routine lagran, and splitting a loop and making do while the
522        outermost loop (the latter requires the intoduction of index arrays)
523    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
524    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
525      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
526    o verification/seaice_obcs: updated for restart test and latest options
527    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
528      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
529      for now this is only available for the C-grid code and also within
530      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
531    
532    checkpoint59m
533    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
534      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
535    o gad_som : fix flux output (& diagnostics) to have same units as other  
536      advection scheme fluxes (was previously multiplied by deltaT).  
537    o added verification/seaice_obcs both to test seaice open boundaries
538      and to provide an example matlab scrpt for generating them
539    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
540    o pkg/salt_plume: clean up salt_plume_frac.F to
541      remove redundancy in PlumeMethod 1 and 4
542    o pkg/kpp: added saltplume diagnostics
543    o pkg/obcs and pkg/seaice:
544      - do not set uice and vice to zero when OB*icefile are unspecified
545      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
546      - moved seaice tracer obcs after call to seaice_growth
547    o pkg/salt_plume: added various options for salt plume depth
548      criterion and for vertical distribution of the salt
549    
550    checkpoint59l
551    o pkg/ptracers: new version of ptracers pickup:
552      read meta file and write only fields which are needed to restart.
553      ( same logic as main pickup file ; also using pickupStrictlyMatch )
554    o pkg/seaice:
555      - add timescale for melting due to warm mixed layer as a means of
556        setting SEAICE_availHeatFrac more conveniently
557      - add a CPP-flag/runtime parameter check for flooding algorithm
558      - reformulated availHeat in seaice_growth.F to be independent of AREA
559    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
560      unit changes
561    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
562    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
563      SX vector computer.
564    o pkg/seaice:
565      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
566        seaice forcing fields can now be read only through pkg/exf
567      - removed some unused halos
568    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
569    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
570      or U/VICE from U/VWIND before computing U/VSTRESS
571    
572    checkpoint59k
573    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
574      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
575    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
576      all experiments pass when compile with un-initialised var. checking option.
577    o added pkg/salt_plume
578    o script to test restart (for now, in MITgcm_contrib/jmc_script)
579    o pkg/seaice: new read/write pickup version.
580      read meta file and write only fields which are needed to restart.
581      ( same logic as main pickup file ; also using pickupStrictlyMatch )
582    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
583    o lab_sea.hb87: modify the domain & update output.hb87.txt :
584      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
585      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
586      process. Fixed here by closing the domain at the Northern boundary.
587    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
588    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
589      a set of consecutive levels in/from a 3-D array.
590    o pkg/ptracers:
591      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
592      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
593    
594    checkpoint59j
595    o in pkgs: dic, obcs, offline, rbcs:
596      standard way to compute coeff. for time interpolation between 2 time reccords
597      which retains full precision (& make results less dependent on compiler).
598      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
599    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
600      packages instead of reading ice cover and wind speed separately
601    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
602     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
603      to allow to compile customized code before the update)
604    o cleaning-up:
605      - fix CPP instruction syntax in pkg/obcs
606      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
607        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
608      - fix some threads issue in IO parts.
609    o pkg/dic:
610      - add tons of "_d 0" (--> much better testreports !)
611       and then update outputs of tutorial_global_oce_biogeo
612    o pkg/mom_fluxform:
613      add a special version of momentum advection intended to conserve momentum
614      next to a bathymetry step or a coastline edge. (default = off = #undef)
615    o new read/write pickup version:
616      - for now, only implemented for main (mdsio) pickup file.
617      - write out only what is needed to restart; merge pickup_nh , pickup_ph
618        and main pickup together.
619      - read meta file; read only what is needed to restart; stop if a field
620        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
621        if it make sense (even if the restart is not perfect).
622      - if no meta file, assume that pickup to read corresponds exactly to
623        a pickup that would currently be written.
624      - read pickup written in the old format (until checkpoint59i) if it
625        recognizes an old meta file (no field-list).
626      - add a meta file in exp. which starts from a pickup: 2 cases:
627        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
628         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
629        b) a meta file describing the content of the associated pickup file
630         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
631    o pkg/mdsio & pkg/rw:
632      - new routine to read a meta file ; new set of routine to read
633        Multiple-fields file (with meta file).
634    o added open boundary conditions capability for seaice
635        HSNOW, HSALT, UICE, and VICE
636    
637    checkpoint59i
638    o adjoint:
639      * fix multiDimAdvection adjoint
640        (partial recomputation problem by TAF for fVerT(:,:,kDown)
641        and comlev1 size definition (maxpass vs. max. number of tracers)
642      * verification/global_ocean.90x45x15 adjoint now tests
643        NLFS and multiDimAdvection using DST3 (=30)
644      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
645    o pkg/kpp: add "_d 0" to real constant (if missing);
646      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
647      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
648    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
649      for internal parameters related to restart process (formerly from PARAMS.h)
650      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
651    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
652      as argument. (only atm2d & obcs write_pickup have not yet been updated)
653    o pkg/monitor:
654      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
655      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
656      - account for deep Atmosphere factor and density factor (anelastic)
657    o added open boundary conditions capability for seaice HEFF and AREA
658    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
659      thermodynamics
660      - requires a little reorganization, which affects the testreport results
661        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
662        so that now the conservative form is tested
663      - add a few comments
664    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
665    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
666    o add new diagnostics to seaice: advective, diffusive fluxes (only for
667      multidim-advection, for scheme 2 they are not filled) and transports,
668      thermodynamic growth rates
669    o change units of EmPmR (inside the code, + within coupling interface)
670      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
671      Affects results @ truncation level (cg2d match) and update output of
672       experiments: lab_sea(6), global_ocean.90x40x15(10),
673      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
674      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
675      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
676      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
677    
678    checkpoint59h
679    o pkg/exf:
680      - improve vectorization by moving if-statement out of loops in
681        exf_mapfields, exf_radiation
682      - exf_bulkformulae.F: introduce 2D fields and vectorize code
683    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
684    o testreport:
685      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
686        monitor & update offline_exf_seaice exp. output.
687      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
688    o pkg/seaice:
689      - bug fix in the evp solver: boundary conditions were affected be
690        masking of zMax/zMin (changes results)
691      - minor bug fix in boundary conditions in seaice_calc_strainrates
692        (changes results for no_slip)
693      - seaice_lsr.F: make interpolation of eta dependent on boundaries
694      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
695      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
696        stress formulation and no-slip boundary conditions
697    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
698      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
699    o pkg/seaice: a first HSALT time stepping equation has been checked in
700    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
701      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
702      without requiring DO-IF statements
703    o pkg/thsice:
704      use continuous power-law function for partition of energy between lateral
705      melting/freezing and thinning/thickening ; old code using step function
706      still available with #undef THSICE_FRACEN_POWERLAW
707      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
708    o testreport: change AD testing : check against results/output_adm.txt
709      using same scripts as for forward test.
710    
711    checkpoint59g
712    o adjoint testing: in preparation for changing testreport:
713      - output format: cost and grad written on separated lines
714      - ad output results in directory "results" (instead of "results_ad")
715    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
716    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
717    o pkg/ecco: allow user defined cost function contributions
718    o testreport:
719      Allow to choose (per experiment) the list of tested output variables
720       and the main variable (used to issue a pass/FAIL ) ;
721      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
722      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
723      Also modify printing of summary:
724       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
725       b) echo the list of tested variables in the individual summary.txt of
726          each experiment.
727    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
728      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
729      (but still depend on the tile decompostion of the domain).
730    o pkg/seaice: change a discretization detail to make the B-grid code
731      "more symmetric". This change is likely to remove all "ridges/leads" that
732      where quasi-aligned with the grid in B-grid solutions. It may also be
733      the solution to the stress coupling issues with the B-grid.
734    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
735      remove .cvsignore from input dir. (since testreport no longer run here).
736    o pkg/thsice:
737     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
738     - fix reshaping of sea-ice just after advection:
739       melt all the ice only if ice-volume is too small.
740     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
741       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
742     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
743    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
744      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
745    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
746      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
747      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
748      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
749      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
750      -> update output.txt
751    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
752     this affects truncation error: -> update output.txt of exp:
753      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
754      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
755    
756    checkpoint59f
757    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
758    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
759      a bounded range (in forward mode)
760    o pkg/ecco, ctrl, autodiff and mom_common:
761     internal parameter controls, completements of implementations
762    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
763    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
764      (not seem any difference in testing results).
765    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
766       at face corners.
767    o pkg/generic_advdiff:
768     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
769      loop range indices for computing vertical advection tendency
770      and do the calculation in the interior only (no overlap) ;
771      for now, only implemented for SOM advection (to save CPU time).
772     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
773    o exch2 adjoint
774      First set of changes:
775      - add exch2 hand-written adjoint templates
776      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
777        This will require cleanup in pkg/autodiff/*.F
778        (changed routines currently kept separate in verif. code/)
779      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
780        that used to hide exch2 or cubed-sphere specific code
781        (commented via 'cph-exch2')
782    o pkg/seaice
783      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
784    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
785       output of global_ocean.cs32x15.thsice .
786    
787    checkpoint59e
788    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
789      for B-grid vector (not yet tested) and C-grid vector (<- only used
790      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
791    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
792      (#ifdef ALLOW_SALT_PLUME)
793    o gather_2d/scatter_2d: removed halo regions
794    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
795      scheme and the corresponding test case (under front_relax dir). For now,
796      only available with Skew-flux form and not yet tested in realistic set-up.
797      adjoint: store directives updated, but gradient checks deteriorated,
798      so maybe GM/Redi adjoint is now broken.
799    o seaice adjoint
800      * add AREA, HEFF, HSNOW as control variable
801        (should not change lab_sea results)
802      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
803    o pkg/seaice:
804      * added computation of saltFlux in seaice_growth;
805        For time being, sea ice salinity is assumed constant
806        contribution of snow flooding to freshening of sea ice is neglected.
807        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
808        defaults to 0.0 in order to maintain backward compatibility.
809        Typical values for SEAICE_salinity are 4 to 10 g/kg.
810      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
811      * added SEAICE_availHeatFrac, which specifies fraction of surface level
812        heat content used to melt or grow ice
813      * commented out cap of HICE: it helps keep ice thinner
814      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
815      * applied OBCS T/S mask to HEFFM sea ice mask
816    
817    checkpoint59d
818    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
819     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
820     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
821    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
822     and change default value of parameter "GM_Small_Number";
823     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
824       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
825       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
826    o pkg/ecco: cost function when applying pkg/smooth to controls
827    o pkg/ctrl: add forcingPrecond run time parameter
828    o pkg/seaice:
829     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
830     - fix bug in metric terms of u-equation in LSR solver (implicit part),
831       changes verification/lab_sea
832     - rearrange implicit part of u-equation in LSR solver to make it easier to
833       read, understand, and debug. This causes changes at the truncation level.
834     - fix (serious) bug in the boundary conditions (sign error in the implicit
835       part) of the LSR solver. Changes all LSR results.
836     - fixed problem with HSNOW initialization to avoid thick snow when AREA
837       is initilized with small values - does not change lab_sea results.
838     - added HsnowFile initialization capability
839    o pkg/smooth: addition to model/src and pkg/ctrl so allow
840     initialization of pkg/smooth and application to control vector
841    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
842    o dependencies: pkg/profiles requires pkg/cal
843    o pkg/profiles:
844     - added option ALLOW_PROFILES_GENERICGRID
845         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
846         that interpolation information (grid points and coefficients) is provided
847         within the netcdf input files.
848         -> sample matlab scripts can be found in MITgcm_contrib/gael
849         that allow you to prepare netcdf input files.
850     - also modified: cleaner include statements, cleaner error print statements,
851       cleaner stops when error, and more tests of the netcdf input files consistency.
852    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
853    o pkg/seaice:
854     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
855       requires a new routine: seaice_diagnostics_fill.F
856     - make sure that seaice does not move if not forced (pressure replacement
857       method, Hibler and Ip, 1995), changes results
858     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
859     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
860       It is turned off by default (=-1.), because it changes the results.
861     - make it possible to read AREA from a file, too.
862    
863    checkpoint59c
864    o add S/R and diagnostics for oceanic mixed-layer depth
865    o move GMRedi call after all vertical mixing schemes (including KPP)
866    o pkg/thsice:
867     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
868      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
869    o pkg/obcs:
870     - bug fix for balance code
871    o pkg/seaice:
872      - allow values of SEAICE_elasticParm > 1
873      - add new parameter SEAICE_evpTauRelax as an alternative
874        to SEAICE_elasticParm
875      - make lsr boundary conditions free slip (by default), changes result
876      - add code for no slip boundary conditions for lsr
877      - set minimum of zeta to zero (and not 4e8) (changes results)
878      - add a cap on AREA after advecting AREA if seaice_growth is not called
879    o change calculation of Visbeck K:
880      - no longer depend on tapering scheme; instead, compute slope (limited
881        by GM_maxSlope). this is equivalent to what was comuted before with
882        clipping or linear tappering.
883      - fix vertical averaging (wrong by 1/2 level)
884      - leave the old version (but will not be maintained) within
885        #ifdef OLD_VISBECK_CALC / #endif
886      - update output of exp. ideal_2D_oce
887    o change error catch in calc_r_star to improve vectorization
888    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
889      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
890    o adjoint:
891      Re-organized adjoint checkpointing according to Matt Mazloff
892      (but with modifs/completions/cleanups)
893      Storing is now bundled into large arrays to optimized I/O
894      (and second step in cleanup of the_main_loop)
895    
896    checkpoint59b
897    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
898      - export/import (between ocean & coupler) fields needed for ocean DIC.
899    o pkg/seaice:
900      - get rid of three more exchanges seaice_calc_viscosities (required
901        different loop boundaries in seaice_lsr and seaice_ocean_stress)
902      - bug fix in seaice_ocean_stress (update of lab_sea required)
903      - reduce loop boundaries to necessary minimum also in seaice_evp
904      - go back to the old way of computing deltaC/Z as the adjoint likes that
905        better
906    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
907      passive tracer to an Age Tracer) + update output.txt
908    o pkg/exf:
909      - implement A-grid / C-grid selection for wind-stress input files.
910      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
911      for now, in exf_bulk_largeyeager04.F only :
912      - change implementation for case where windspeed + 2. components wind-stress
913        are read-in. AND use rhoConstFresh to convert evap.
914    o pkg/seaice:
915      - use correct EXCH_UV for wind-forcing (on A-grid).
916      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
917        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
918    o pkg/exf:
919      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
920      EXF_INTERPOLATION:
921      - merge global_with_exf/code version of exf_interp_read.F
922        to the main code ;
923      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
924        reading the file ; Important: This options needs to be defined to recover
925        previous code.
926        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
927      - no longer loose real*8 precision along the way when using exf_iprec=64.
928    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
929      - change discretisation of evp-solver in order to avoid another exchange
930        (changes lab_sea) and clean up a little
931      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
932        help the adjoint (this also changes the results slightly)
933      - add a few "_d 0" where they had been missing in seaice_evp.F
934      - cleaning up: remove unused seaice_calc_rhs.F
935    o pkg/exf: some cleaning-up:
936      - change various "constants" into runtime parameters
937      - cleaned-up Large&Yeager04 routine which should eventually
938        replace exf_bulkformulae.F (changed names of S/R and CPP)
939        and merged various ALLOW_ATM_WIND options
940     only used with thsice pkg (in thsice_get_exf.F):
941      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
942        which are used when useStabilityFct_overIce=TRUE (= the default)
943      - change default values of ice & snow emissivity and scale downward LW
944        by ice & snow emissivity.
945    o pkg/thsice:
946     fix few little problems, in thsice_calc_thickn.F:
947      - growth vertically (and not laterally) if iceFrac == iceMaskMax
948      - melt only laterally if hIce < hThinIce (as the comments say)
949      and in thsice_extend.F:
950      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
951      - start to form ice as soon as the minimum ice-volume is reachable.
952     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
953      and cpl_aim+ocn
954    o pkg/kpp
955     - move computation of surface related input fields to KPP into a new
956       subroutine kpp_forcing_surf.F
957     - remove wrong (within bi,bj loops) EXCH calls.
958     - little cleaning (add argument myThid in last position, cvs header ...)
959     - for now, fix conservation problem by exchanging KPPviscAz (may not
960       be the best fix)
961    o pkg/seaice
962     - check for inconsistent evp parameter/cpp-flag combination
963     - remove leftover errIO flat for obsolete name list error handling
964    o OpenAD
965     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
966    
967    checkpoint59a
968    o pkg/seaice: some parameter clarifications and a little bit of clean up
969    o pkg/thsice: rename run-time parameters:
970       himin       -> hIceMin
971       himin0      -> hThinIce
972       hihig       -> hThickIce
973       i0          -> i0swFrac
974       transCoef   -> bMeltCoef
975       frac_energy -> fracMelting
976      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
977       with default values (for now) that do not change the results.
978      remove old version of thsice vars advection in pkg/seaice.
979    o in FFIELDS.h:
980      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
981      - make pLoad & sIceLoad always available (but still only used if
982         ATMOSPHERIC_LOADING is #define).
983    o pkg/kpp: replaced _KPP_RL with _RL
984    o bug fixes for vertical diffusivity computations when both KPP and
985        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
986        are no longer updating the vertical diffusivity array
987        (passed as argument) but are (re-) setting those arrays.
988    o pkg/seaice: fix bug in evp solver, while doing that
989      - change (improve?) discretization of stress computations for both
990        cgrid-lsr and evp solver
991      - add a new routine to compute strain rates
992      - the above changes lab_sea results
993      - add no slip conditions for evp solver (off by default), lsr-version
994        may follow
995      - fix exchange for shear at Z-points (does not change lab_sea)
996      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
997        (to force the user to pick a time step since there is not "safe" way
998        of choosing it)
999      - add principal stress diagnostics
1000      - rearrange fields for evp a little to avoid having to call a: too many
1001        exchanges and b: exchanges for stress trensor components which we do
1002        not have.
1003      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1004        of evp, complete rewrite for lsr case (latter is does not yet work
1005        in all cases)
1006    o pkg/kpp: add code to have mixing in shelf ice caverns
1007      - add myThid to all kpp routines (long overdue)
1008    
1009    checkpoint59
1010    o pkg/exf:
1011      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1012        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1013      - move exf header files from lower_case.h to UPPER_CASE.h ;
1014        add missing cvs Header & Name
1015      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1016      - add namelist param. selectStressGridPosition, exf_monFreq
1017      - retire many _CLIM routines, and remove data.exf_clim
1018        + params moved to data.exf
1019        + climsst, climsss now handled by exf_set_gen, i.e.
1020          climss?period=0 refers to constant field,
1021          climss?period=-12 to monthly forcing
1022      - split up namelists in data.exf
1023    o pkg/seaice:
1024      - remove seaice_exch and seaice_exch_uv
1025      - remove superfluous exchange of theta
1026      - add myThid to seaice_budget_ocean/ice
1027      - add new interface for atmospheric wind forcing (C-grid only)
1028        + new routine
1029        + two new field (taux, tauy for stress over ice)
1030        + removed one global field (DAIRN) for C-grid case only
1031    o pkg/thsise
1032      - 2nd set of modifs for thsice adjoint in conjunction with exf
1033    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1034    
1035    checkpoint58y_post
1036    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1037      vertical diffusivity, similar to that in MOM4; turned on using
1038      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1039      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1040    o Added capability for 3D specification of background vertical diffusion
1041      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1042      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1043      "data" file that contains the 3D vertical diffusivity coefficients.
1044    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1045      - add code within pkg thsice to advect & diffuse sea-ice fields
1046      similar to (and will replace) what has been added in  seaice_advdiff.F,
1047      but: - conserving Mass, Heat & Salt.
1048           - better when using non-linear advection scheme (not yet fully tested)
1049           - can also be used in atmospheric set-up (for now, only the diffusion).
1050    
1051    checkpoint58x_post
1052    o IO option for global-file compact format:
1053      - add options when generating topology (utils/exch2/matlab-topology-generator)
1054      - add I/O capability (pkg/mdsio).
1055      - adapt utils/matlab/rdmds.m to read this format.
1056      for now long-line format not yet supported by pkg/mdsio (& exch2).
1057    o shelfice: add a few diagnostics
1058    
1059    checkpoint58w_post
1060    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1061      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1062      (and replace horiVertRatio in NH code).
1063      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1064                         and tutorial_plume_on_slope (sensitive to truncation)
1065    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1066      directly to drive seaice model (C-grid only)
1067    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1068     - reintroduce computation of wind from stress,
1069     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1070       mass points to avoid tau = 0
1071     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1072    o rdmnc.m: make it work with "global" files created with gluemnc
1073    o rdmnc.m : some improvements in dealing with singleton dimension
1074      (tested on all testreport mnc output files).
1075    o genmake2: disable pkg/profiles if netcdf test fails.
1076    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1077    o move call to cal_readparms up to make calendar parameters/variable available
1078      to all packages
1079    
1080    checkpoint58v_post
1081    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1082      useDynP_inEos_Zc tested.
1083    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1084    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1085      and portions thereof.  See read_cs.txt for description and examples.
1086    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1087      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1088      following the great-circle arc between those 2 points.
1089    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1090      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1091    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1092     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1093     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1094     - still needs work (not working with some options ; efficiency to improve)
1095       and serious testing.
1096     - use this scheme for temperature & salinity in 2 advection test exp.:
1097       advect_xy & advect_xz, respectively.
1098    
1099    checkpoint58u_post
1100    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1101    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1102    o testreport: add option "-skipdir" to skip some test.
1103    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1104      momentum calculation.
1105    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1106    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1107      remove checkpoint.F and the_correction_step.F (no longer used);
1108      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1109    o add option (linFSConserveTr) to correct for tracer source/sink due to
1110      Linear Free surface
1111    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1112    o pkg/thsice: fix reading mnc-pickups
1113    
1114    checkpoint58t_post
1115    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1116    o pkg/mdsio:
1117     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1118       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1119       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1120     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1121     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1122       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1123     - new S/R (to replace MDSWRITEMETA), which allows to write more
1124       informations (variable names, time ...) to meta files.
1125     - modify rdmds.m to give back the meta file content.
1126    o pkg/diagnostics: change vertical interpolation to be safer, and more
1127       flexible (define p-levels to interpolate to in data.diagnostics);
1128      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1129       diagnostic pointer.
1130    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1131    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1132    o fix multi-category seaice:
1133     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1134       SEAICE_MULTICATEGORY
1135     - fix short wave heat flux
1136    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1137       and allow to use EVP solver. Change forward lab_sea: test both EVP
1138       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1139    o Initial check-in of lab_sea adjoint
1140      (very similar to natl_box_adjoint/code_seaice)
1141      * used C-grid and EVP solver
1142      * used KPP, GM/Redi
1143      * uses inAdExact=.TRUE.
1144      * gradient checks fail for both ADM and TLM
1145        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1146        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1147        issue is related to forward mismatch between g77 an ifort
1148    o pkg/seaice: overhaul of thermodynamics
1149     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1150     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1151     - move a few global fields out of SEAICE.h into seaice_growth.F and
1152       make them 2D (FICE/QNETO/ ...)
1153     - remove FO (it is the same as QNETO)
1154     - introduce a few local fields to avoid modifying external fields such
1155       as atemp, etc.
1156    
1157    checkpoint58s_post
1158    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1159      changed exf_set_gen.F so that
1160        genperiod=0 means input file is one time-constant field and
1161        genperiod=-12 means input file contains 12 monthly means
1162    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1163      this affects truncation error ; generate new output file for exp. which
1164      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1165        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1166        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1167        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1168        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1169        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1170    o start implementation of deep-atmosphere and anelastic formulation
1171    o verification: remove 2nd copy of input files and use script "prepare_run"
1172      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1173    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1174    o profiles: fix for multithreaded case
1175    
1176    o diagnostics: rename few diags:
1177      s/'PRESSURE'/'RCENTER '/g
1178      s/'TICE    '/'oceFreez'/g
1179      s/'TAUX    '/'oceTAUX '/g
1180      s/'TAUY    '/'oceTAUY '/g
1181      s/'SWFLUX  '/'oceQsw  '/g
1182      s/DIFx/DFxE/g
1183      s/DIFy/DFyE/g
1184      and add few ocean-forcing diagnostics:
1185      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1186    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1187      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1188      as actual snow thickness.  It now refers everywhere to effective snow
1189      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1190    
1191    checkpoint58r_post
1192    o modifications to pkg/seaice/growth.F, which change results of
1193      lab_sea experiment: fixes pertain to melting snow over open water, to
1194      masking EVAP under sea ice, and to using the correct AREA variable for
1195      computations of EVAP, PRECIP, HSNOW, and GHEFF
1196    o add ability to read bathy, salt, and theta using MNC (off by def)
1197    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1198      both are turned off by default and do no change any results
1199    o seaice advection with pkg/thsice: a step toward the use of non-linear
1200      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1201    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1202      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1203      in natl_box (affects results @ truncation level: update output.txt)
1204    o multi-threading and IO:
1205      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1206      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1207        (needed to work with SingleCpuIO): tested in all verif. exp.
1208    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1209      affects the results (but none of the verification test uses this scheme).
1210    o Adding some pkg/diagnostics capability to pkg/seaice
1211      (will certainly be subject to changes)
1212    o ctrl: adding new control variables:
1213      lwflux, lwdown, evap, snowprecip, apressure, runoff
1214    
1215    checkpoint58q_post
1216    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1217      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1218      high_res_cube configuration by 4% on Columbia.
1219    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1220      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1221      dynamical allocation (seems to work in multi-threaded).
1222    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1223      single CPU io) so that TAF does not have to see EESUPPORT.h
1224    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1225    
1226    checkpoint58p_post
1227    o obcs: stop if obcs is used with useCDscheme = .true.
1228    o shelfice:
1229     - fix a sign error so that no slip at shelfice interface works
1230     - remove stop for combination non-hydrostatic code and shelfice. That does
1231       not mean, that the results are correct, but at least they are numerically
1232       stable
1233    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1234    o added adjoint exch routined for all exch*3d* routines
1235      and updated flow directives
1236    
1237    checkpoint58o_post
1238    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1239      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1240    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1241      and clean-up reading/writing of pickup files.
1242    o fix local version of read/write pickup (NH part) in rotating_tank/code
1243    o simplify EXCH interface:
1244     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1245     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1246    o added the regrid package
1247    o shelfice:
1248     - add a simple boundary layer scheme to reduce noise
1249     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1250    
1251    checkpoint58n_post
1252    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1253       local variable (not in common block).
1254    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1255      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1256      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1257        to work with SingleCpuIO.
1258    o add "_d 0" to real constant of pkg/cfc subroutines ;
1259       update exp. cfc_exemple & tutorial_cfc_offline output files.
1260    o multi-threading and IO:
1261      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1262        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1263      - barrier before and after reading.
1264      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1265      - avoid using MDS_WRITELOCAL for LAND pkg output.
1266      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1267        common-block variables ; Allows multi-threading with master-thread IO.
1268    o change default MAX_NO_THREADS from 32 to 4 ;
1269      and stop cleanly when MAX_NO_THREADS is too small.
1270    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1271    
1272    checkpoint58m_post
1273    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1274       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1275    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1276       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1277       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1278    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1279        add MITgcm_tutorials (= code + all the tutorials)
1280    o ecco, option to compute cost for total ssh (mean+anom)
1281    o consistent with addition of ptracer and ssh in pkg/profiles
1282    o profiles: adding ptracer and ssh
1283    o testreport: change multi-test output-file name
1284      (from output.txt.{name} to output.{name}.txt)
1285    o profiles: now ok for mutli-tiles case
1286    o seaice: add 4 parameters for different advection schemes for area,
1287      (effective) seaice thickness, enthalphy, and snow height. Their default
1288      is the standard parameter SEAICEadvScheme
1289    o calc_gw:
1290     - add cosFacU in zonal viscous flux (harmonic.visc.).
1291     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1292       of tutorial_plume_on_slope.
1293    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1294    o calc_gw: true flux-form, account for horizontal grid spacing.
1295      update rotating_tank results, but not plume_on_slope (affected at
1296      truncation level, 11 digits).
1297    
1298    checkpoint58l_post
1299    o calc_gw:
1300     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1301     - remove side-drag for now (need to fix it); update plume_on_slope results.
1302     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1303    o commit code to make SST/SSS weights spatially variable
1304      (based on either variable in-situ or variable initial T/S weights)
1305    o pkg/ecco:
1306      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1307        now based on horizontally varying weights wthetaLev, wsaltLev
1308      * cost_averagesflags now returns year indices in addition to day, month
1309      * sflux balance is performed on annual basis
1310        (sflxumm, sfluxmm2, bal_sfluxmm)
1311      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1312        including separate counting and multipliers
1313    o pkg/rbcs
1314      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1315    
1316    checkpoint58k_post
1317    o testreport:
1318     - always build in dir. "build" (if not there, mkdir build instead of building
1319       & running in input)
1320     - run in dir run (if it exists), in build otherwise.
1321     - call prepare_run (if input/prepare_run exists)
1322     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1323    o pkg/exf modifications to interpolation and rotation routines for more
1324       reasonable treatment of North Pole singularity: for tracers North Pole
1325       value is set to northernmost zonal-mean value, for zonal velocity it is
1326       set to zero, and for meridional velocity it is set to northernmost value.
1327    o pkg/exf/exf_check_range.F
1328     - add tile index to diagnostics and move stop statement to the very
1329       end of the routine.
1330    o pkg/diagnostics: (diagnostics_main_init.F)
1331      define title of isomorphic variables according to the current config.
1332    o pkg/thsice with pkg/seaice dynamics:
1333    - fix domain of computation (interior only, required for exf) and do exchanges
1334    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1335    o towards a standard way of dealing with multi-threading in MONITOR
1336      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1337    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1338       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1339    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1340    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1341    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1342       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1343    o tracer advection:
1344     - clean-up and simplify calc_common_factors.F
1345     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1346       advection subroutine (but still not used within DST advection S/R)
1347    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1348    
1349    checkpoint58j_post
1350    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1351      from file (collects calls previously in FORWARD_STEP)
1352    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1353    o adjoint store dir. adjusted accordingly
1354    o genmake2
1355      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1356    
1357    checkpoint58i_post
1358    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1359      on wind stress (SEAICEstressFactor defaults to 1.)
1360    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1361      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1362    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1363      on CS-grid: no longer loosing mass.
1364    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1365    o pkg/ggl90: fix sloppy output and fix a bug
1366    o pkg/seaice: added SEAICEuseEVPpickup parameter
1367      - Set to false in order to start EVP solver with
1368        non-EVP pickup files when using SEAICEuseEVP
1369      - fix sign error in diffusion in seaice_calc_rhs
1370    
1371    checkpoint58h_post
1372    * Modifications for bottom topography control
1373      o replace hFacC by _hFacC at various places
1374      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1375      o add non-self-adjoint cg2d_nsa
1376      o update autodiff support routines
1377      o re-initialise hfac after ctrl_depth_ini
1378      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1379    * Adding verification for 5x5 box (4-layer) bottom topography control
1380    
1381    checkpoint58g_post
1382    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1383       used for mean seasonal cycle, mean diurnal cycle); add an example
1384       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1385    o pkg/ggl90:
1386      - add parameter (minimum surface kinetic energy)
1387      - fix bug (avoiding division by zero)
1388    o couple pkg/thsice to pkg/seaice:
1389      - modify advection in seaice to accomodate new scalar fields to be advected
1390      - only muliDimAdection scheme work with seaice/thsice
1391      - mapping of thsice-variables to seaice-variables, back and forth
1392      - does not break the verification experiments, but does not give the
1393        desired results either
1394    o pkg/seaice
1395      - make (default) second order advection a bit less confusing?
1396    
1397    checkpoint58f_post
1398    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1399      to pkg/seaice):
1400      - new routines thsice_map_exf and thsice_get_exf provide the interface
1401      - add an additional formal parameter to thsice_solve4temp
1402    o pkg/exf:
1403      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1404      - correct Stefan-Boltzmann constant
1405      - new parameter for longwave surface emittance
1406      - separate some stuff from exf_bulkformulae into new routines  
1407        exf_radiation, exf_wind
1408      - add new parameters and constants: longwave emissivity for ocean, ice
1409        and snow, evaporation parameters over ice
1410      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1411        either wind from stress or stress from wind
1412    o pkg/thSIce:
1413    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1414    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1415       and THSICE_CALC_THICKN
1416    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1417    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1418      to make debugging easier.
1419    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1420    o pkg/bulk_force:
1421      - clean-up comments and parameters ;
1422      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1423    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1424      generate new output for test-experiment: aim.5l_cs.thSI
1425    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1426      testreport accordingly
1427    
1428    checkpoint58e_post
1429    o SEAICE_CGRID adjoint done
1430    o R_STAR adjoint implemented.
1431      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1432      * need to sort out init. of h0facc, etc.
1433    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1434      to be able to use it in pure forward.
1435    
1436    checkpoint58d_post
1437    o upgrade simple test-experiment to tutorial example:
1438     step.1: duplicate the experiment and (step.2) will remove the old copy.
1439      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1440      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1441      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1442      tutorial_global_oce_biogeo    <- copy of dic_example
1443      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1444      tutorial_plume_on_slope       <- copy of plume_on_slope
1445      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1446      tutorial_global_oce_optim     <- empty for now (David ?)
1447      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1448     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1449    o correct a sign problem in cost_scat.F
1450    o obcs and ptracers: fix boundary conditions for advections schemes
1451      with larger stencil
1452    o thsice adjoint: start
1453    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1454      completeness
1455    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1456      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1457    o ptracers adjoint:
1458      * avoid extensive recomputatations
1459      * fix missing re-init. of gptr (missed by TAF)
1460    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1461      me to turn off the excessive output to STDOUT that this package produces
1462    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1463      and add those terms in Vector-Invariant formulation.
1464    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1465      if the control period (xx_hfluxperiod etc) is 0
1466    o in profiles pkg, clean routines and fix details
1467    o in ecco pkg, reading ssh data:
1468      fix problem in case the model does not start at iter0=0
1469    o fix mnc-pickup/restart for ptracers
1470    o new package prifiles:
1471      code to compute profile-based cost by Gael Forget
1472      (modifs in ecco, ctrl, autodiff)
1473    o Benign bug fix in initialization (spotted by M. Mazloff) of
1474      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1475    
1476    checkpoint58c_post
1477    o adjoint: finish NLFS adjoint and provide reference output in
1478      verification/global_ocean.90x40x15/results_ad_nlfs
1479    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1480      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1481      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1482      with SEAICE_CGRID defined.
1483    o move calendarDumps from "data" to "data.cal" and clean-up the code
1484      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1485    o add useEXF & useCAL flags (for now, set in hard-coded way)
1486    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1487      (were missing in NH mode, and wrong in quasihydrostatic mode).
1488      waiting for Chris updated version of calc_gw to add those CALLs.
1489    o fix bug in quasihydrostatic S/R ;
1490      add a test for this option: global_ocean.90x40x15.qshyd
1491    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1492      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1493    o add on/off flag useOffLine for package OFFLINE
1494    o seaice:
1495      - modify advection so that it works also on the C-grid
1496      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1497        problem in multi-tile runs with C-grid
1498      - add flags for clipping ice velocities and/or masking solver forcing
1499      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1500        C-grid solver
1501      - added a few comments to seaice_diffusion.F
1502      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1503        are now exclusive)
1504      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1505        required re-ordering the code a little:
1506       + make DAIRN global variable (defined in SEAICE)
1507       + move computation of the viscosities eta and zeta into a new separate
1508         routine (because I need to recompute them in seaice_ocean_stress.F)
1509    
1510    checkpoint58b_post
1511    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1512      update output.txt of exp. aim.5l_cs.thSI
1513    o various mnc cleanups and improvements:
1514      + shrink lookup tables by factor of ~4
1515      + better error reporting when running out of lookup space
1516      + able to handle longer path/file names (up to 500 chars)
1517    o adjoint:
1518      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1519      - TBD: "hidden" mom_vecinv recomp. in dynamics
1520    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1521     (allow to differentiate between forcing components using new integer flags:
1522      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1523     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1524    o ecco
1525      - enable trend removal from SSH anomaly obs.
1526    o adjoint
1527      - a fix for PmEpR when #undef EXACT_CONSERV
1528      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1529      - try to fix "hidden" recomp. in forward_step for NLFS
1530        (NLFS seems broken sometimes after I checked it in)
1531    o seaice:
1532     - add c-grid version of the dynamic solver:
1533       + three new routines that are the c-grid substitute lsr, dynsolver
1534         and ostres
1535       + put a few fields that were local to dynsolver into global common
1536         blocks, so that I can move the computation of stresses etc into
1537         seaice_lsr (saves coding but may break the adjoint).
1538     - replace more hardwired parameters by runtime parameters
1539     - add ice masks that mask the rhs of the implicit solvers where there
1540       is no ice (commented out in seaice_dynsolver, because i am not sure
1541       if this works properly), eventually this should replace the clipping
1542       of ice velocities in seaice_dynsolver to +/-40cm/s.
1543    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1544      include it only where its needed
1545    o move balancing of fluxes before the call of external_forcing_surf
1546    o seaice:
1547      - correct units of turning angles (now they are really in degrees)
1548      - move computation of GWATX/Y out of main routine into dynsolver
1549      - initialize GWATX/Y in seaice_init
1550    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1551      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1552    o seaice: add runtime flags for turning angles (default to zero)
1553    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1554      and trend from exf forcing and ctrl control adjustments
1555    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1556      (since checkpoint57x_post)
1557    o change the default rotation period to 86164.s = the Earth rotation
1558    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1559      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1560    o seaice advection: add code for choosing between the default (2nd order
1561      central differences) and multiDim advection schemes provided by
1562      pkg/generic_advdiff
1563    o seaice:
1564      - removed all references to SEAICE_GRID.h fields from
1565        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1566        (cubed-sphere configuration will change a little)
1567      - grid computations in seaice_init are obsolete now.
1568      - cleaned up code a little so that is easier to read (hopefully).
1569      - added new (better?) discretizations of default advection and diffusion
1570        (turn on with SEAICEuseFluxForm)
1571      - replace 1 in 3d global fields by kSurface in growth.F
1572      
1573    checkpoint58a_post
1574    o seaice:
1575      - bug fix in advect.F
1576    o shelfice:
1577      - separate shelfice load anomaly from pload (breaks with time
1578        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1579        Its default is 0., but it may be computed more cleverly from (unknown)
1580        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1581        done offline. A good approximation of the pressure load anomaly is
1582        necessary to avoid large initial adjustment processes underneath
1583        deep-reaching shelfice.
1584      - small fix in ISOMIP shelfice_thermodynamics
1585      - add more sophisticated thermodynamics of Hellmer (1989), this is
1586        now the default
1587      - give a few constants more intuitive names
1588    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1589      if bulk formulae are used in long integration (especially EmPmR). Turn
1590      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1591      if balancePrintMean, the imbalance that is substracted is printed to
1592      STDOUT.
1593    o fix bug (typo) in obcs_apply_eta.F
1594    o add a new package shelfice which enables us to model the circulation
1595      underneath shelf-ice with draughts of hundreds of meters.
1596     - works
1597     - to do: + include improved thermodynamics
1598              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1599                instead of new field kTopC
1600              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1601                instead of new field R_shelfIce and new code in ini_depth.F
1602                and ini_mask_etc.F?
1603              + adjust vertical mixing schemes?
1604    o seaice pkg:
1605     - add a cpp-flag to include a simple formula for a salinity dependent
1606       freezing point of sea water at the surface
1607     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1608       meridional stresses are now different (and hopefully correct)
1609    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1610       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1611       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1612    o pkg/diagnostics: add options and parameters for regional-statistics
1613       diagnostics ; define regions by reading a region-mask from a file
1614       (might add other options later)
1615    o pkg/bulk_force:
1616     - add option and parameters to use AIM surface-flux formulae.
1617     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1618       others forcing fields (defined in PARM05, parameter file "data") are loaded
1619       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1620     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1621     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1622     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1623       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1624     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1625    
1626    checkpoint58
1627    o add "--embed-source" option to genmake2 which, when the supporting
1628      tools can be compiled (as determined by genmake2) will turn on the
1629      embed_files package which then embeds the entire MITgcm source code
1630      (*.[fFhc] + Makefile) used for the build within the executable
1631      - requested by CNH but off by default
1632      - adds a paltry <9MB to the mitgcmuv executable in most cases
1633      - only writes the output when useEMBEDSRC in eedata is true
1634    o clean up 3-dim. relaxation codes:
1635      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1636      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1637      * Thanks to Tom Haine for testing!
1638    
1639    checkpoint57z_post
1640    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1641      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1642    o fix the pickup behavior for obcs in combination with ptracers
1643    o fix a bug in ptracers_external_fields_load
1644    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1645      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1646    o transfered surface NH pressure to eta field (if exactConserv).
1647    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1648         and update lab_sea output.txt file.
1649    o completing 3-dim. relaxation code: additional term
1650         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1651      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1652      * At compile time, in "EXF_OPTIONS.h" set
1653          #define  ALLOW_CLIMTEMP_RELAXATION
1654          #define  ALLOW_CLIMSALT_RELAXATION
1655      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1656          tauThetaClimRelax3Dim = 15552000.0,
1657          tauSaltClimRelax3Dim  = 15552000.0,
1658      * 3 cases:
1659          1) Use a constant-in-time 3-dim. field
1660          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1661          3) Real-time relax. to time-evolving prescribed field
1662    o Adding Laplacian-type smoothness constraint on
1663      initial and boundary (forcing) controls (ic, bc)
1664      * enable at compile-time via
1665        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1666      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1667      * Absolute scale somewhat unclear so far
1668      * no area weighting was included since no other cost term does so far
1669    
1670    checkpoint57y_post
1671    First step for a NLFS adjoint
1672    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1673    o new init. routines for calc_r_star, calc_surf_dr
1674    o still need to deal with ini_masks_etc
1675    o testreport seemed happy
1676    checkpoint57y_pre
1677    
1678    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1679    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1680    o add new offset feature to offline pkg (plus minor cleanup)
1681    o cfc fixes for final year of integration
1682    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1683      be in GCHEM_OPTIONS).
1684    
1685    checkpoint57x_post
1686    o fix testreport Pb in multiple test experiment.
1687    o cleanup our namelist syntax in verification:
1688      - make it more F95 standards compliant (some work still needed)
1689      - allows the vast majority of our tests to work with gfortran
1690    o Non-Hydrostatic:
1691     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1692     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1693    o Allow to apply AB on T,S rather than on AB(gT,gS):
1694     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1695     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1696       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1697     - need a "clever" read_pickup to restart from the other AB formulation
1698    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1699    o remove some unused variables (reduces number of compiler warnings)
1700    o adjoint
1701      * Disable useVariableViscosity for adjoint for time being
1702        (there are a number of extensive recomputations)
1703      * Initialize certain variables needed for adjoint
1704    
1705    checkpoint57w_post
1706    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1707                 fix the singleCpuIO RS version of MDSWRITEFIELD
1708       and add a WARNING if using globalFiles=T with multi-processors.
1709    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1710      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1711    o tracer advection scheme:
1712      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1713       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1714       was not very convenient).
1715      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1716       (further tests needed for the implicit DST & Flux-Limiter schemes).
1717    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1718      and sRef for convenience, handy, when you want to initialize
1719      ptracers in a large domain with a constant non-zero value. Also,
1720      untangle ptracers_init.F a little.
1721    
1722    checkpoint57v_post
1723    o change dome exp. to use variable viscosity in side-drag terms.
1724    o remove all the files from the cfc_offline test since they are now
1725      incorporated into tutorial_cfc_offline which has been producing
1726      identical results for a few days of testing
1727    o add new parameter: sideDragFactor to enable half-slip-side BC
1728      and change side-drag S/R to use viscosity from mom_calc_visc
1729      (can switch back by setting sideDragFactor=0.); affects results at
1730      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1731       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1732    o vorticity & strain are now computed without masking, to account for
1733      no-slip-side BC in variable viscosity calculation ; mask is applied
1734      anyway later on, before computing advection/coriolis terms.
1735    o modify exp4 to test new obcs support for reading from external files
1736      and for passive tracers
1737    o fix behavior of ptracers_monitor when monitor output is written to a
1738      netcdf-file; still not independent of monitor.F (writes in the same
1739      file).
1740    o change default value of tRef (put a uniform, meaningful value for ocean
1741      & atmos) and initialize sRef (was missing, as Martin mentioned).
1742    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1743      to be proportional to enstrophy dissipation length.  Thus,
1744       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1745      This is now consistent with Smagorinsky and with the manual.
1746    
1747    checkpoint57u_post
1748    o OBCS and PTRACERS: add open boundary support for passive tracers
1749      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1750        OB-values from file; this is not different from the way theta and salinity
1751        are treated
1752      - however, Orlanski-radiation conditions are not supported, and the model
1753        will stop if you use pTracers and Orlanski at the same time.
1754      - beefed up the rountine obcs_external_fields_load: now only those open
1755        boundary values are overwritten with values from files for which there
1756        are really files, otherwise the OB-fields remain untouched. This makes
1757        it possible to use different OBs at different ends of the domain (as
1758        with EXF)
1759    o reduce number of exch calls in shap_filt (s2).
1760    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1761      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1762    
1763    checkpoint57t_post
1764    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1765    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1766      same truncation, independent of the face number: affects affects several
1767      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1768    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1769      note that biharmonic viscosity + no-slip was not tested in any experiment.
1770    o fix bug in non-linear free-surf side-drag ; generate new output for
1771      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1772    o make mnc honor the writeBinaryPrec flag for most kinds of output
1773    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1774    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1775      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1776    o add brackets in multi-terms sum to get same truncation, independent of
1777      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1778      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1779    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1780      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1781      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1782      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1783      Suggested values of viscosity parameters found in mom_calc_visc.
1784      Many new viscosity diagnostics available.
1785    
1786    checkpoint57s_post
1787    o Add clearing-house for viscosity calculations, mom_calc_visc and
1788      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1789      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1790      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1791      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1792      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1793      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1794      ViscAhStrain and viscAhTension are now retired.
1795    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1796    o In response to JMC's bug report, genmake2 now ignores any soft-links
1797      that it finds in the *current* directory when searching for files.
1798      Soft-links found in any other source directories will still work as
1799      they did before.
1800    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1801      a C routine to unlimit the stack size
1802    o mnc-ify pkg/aim snapshot vars
1803    o mnc-ify pkg/land as requested by Daniel
1804    o various changes to mnc including:
1805      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1806      - output can now be grouped so that all files within a group
1807          change the ITER portion of their names in lock-step together
1808      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1809          and works with both EXCH1 and EXCH2 (but needs more testing)
1810      - writing works for all verification test cases w/ g77 on Linux
1811    
1812    checkpoint57r_post
1813    o make MNC variable initialization happen earlier
1814    o add diagnostics for (almost) each term of the momentum Eq.
1815    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1816    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1817    o remove MINIMAL_TAVE_OUTPUT option ;
1818      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1819    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1820      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1821    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1822    o add time-dependent SST, SSS control
1823    o cost terms in ecco/ modularized (new cost_generic.F)
1824    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1825    o new infrastructure for seaice model vs. obs misfits in seaice/
1826      * driver from the_main_loop.F is seaice_cost_driver.F
1827      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1828      * gradient check in Exp. 6a of natl_box_adjoint/
1829    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1830      (see README file)
1831    
1832    checkpoint57q_post
1833    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1834    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1835      - bug was reported by Jean-Michel and Ian Fenty
1836    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1837      update exp. cpl_aim+ocn output.
1838    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1839      Needed for high-res. runs with large global files
1840      to be able to limit tapelev size
1841    o Changed some tests for adjoint:
1842      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1843      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1844      * global_ocean.90x40x15/ back to default 3-level checkpointing
1845    o Modifications to enable scripted COMMON to MODULE conversion
1846      * verification/OpenAD/code/ has necessary scripts and description;
1847      * converts, compiles and runs successfully;
1848    
1849    checkpoint57p_post
1850    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1851    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1852      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1853    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1854    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1855      (was already the case for dissipation with mom_vecinv,
1856       and also the case for grad.PhiHyd when staggered-timeStep)
1857      This will allow to put dissipation out-off the AB time-stepping.
1858     Unfortunately, affects truncation error. Update output of exp. that "fails"
1859      (cg2d matching number) and leave the others for later: front_relax(10),
1860      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1861      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1862    
1863    checkpoint57o_post
1864    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1865      (2) its ready to be documented during the 20050801 DocFest
1866    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1867      for ideal_2D_oce and lab_sea on linux_ia32_g77
1868    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1869      in global1x1_tot/code_seaice_adj to access indices 32, 33
1870      (worth another tag)
1871    
1872    checkpoint57n_post
1873    o adding precip control xx_precip 32
1874    o adding swflux control xx_swflux 33
1875    o Replacing 10 forcing penalty cost routines by 1 generic.
1876    o Implementing partitioning in time-mean and variable adjustment
1877      for atmos. state.
1878    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1879    o in natl_box_adjoint:
1880      * updated exp 1 to 10
1881        (but does not have time-mean vs. variable split results yet)
1882    o updated global1x1/*_seaice_adj/
1883      to incorporate latest changes
1884    o enable useSingleCpuIO for mdsio vector routines
1885      (applies in particular to tapelev I/O)
1886    o removed inefficient K-loop in all active_file*control*.F
1887    
1888    checkpoint57m_post
1889    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1890      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1891    o pkg/exch2: filling of face-corner halo regions is optional
1892      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1893    
1894    checkpoint57l_post
1895     tag before updating tutorials (pre-release-2)
1896    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1897       for output and interpolation of input fields onto model grid)
1898    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1899       Affects results of exp. rotating_tank ; update output.txt.
1900    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1901          and taking the square quantity and/or using a fraction-weight field.
1902    o fix aim_diagnostics_init.F mate numbers.
1903    o add mnc output capability to diagnostics/diagstat and update
1904      our cvsignore files for the ACSII output generated
1905    
1906    checkpoint57k_post
1907    o lab_sea now uses diagnostics package and provides a suite of
1908      new EXF diagnostics output.
1909    
1910    checkpoint57j_post
1911    o exf
1912      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1913        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1914        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1915      * extended diagnostics output
1916        - now includes all EXF variables
1917        - hs, hl moved to common block
1918        - separate S/R for diagnostics, called after ctrl vector is added
1919        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1920        - EXFqnet contains true Qnet (i.e. includes qsw)
1921      * updated verif. lab_sea, global_with_exf
1922      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1923        to ensure that diagnostics sees a true EXFqnet
1924    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1925    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1926      several times with different frequencies.
1927    o mnc-ify the thsice package as requested by Daniel Enderton
1928      - the monitor--MNC output needs work
1929      - many attributes need to be added (most are currently blank)
1930    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1931      - many attributes need to be added (most are currently blank)
1932    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1933    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1934    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1935      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1936         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1937    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1938     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1939    
1940    checkpoint57i_post
1941    o Diagnostics package was changed: diagnostic allocation is now deactivated
1942      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1943    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1944      add 1rst Order upwind vertical Shear.
1945    o add a quick fix for A/B checkpointing in OFFLINE mode
1946    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1947      end-run around the C/Fortran linking horror in eesup/src/timers.F
1948    o added pkg/runclock: allows user to terminate run based on wall clock
1949    o added non-hydrostatic scaling parameter: nh_am2
1950    o pkg/my82: futile attempt to make results compiler-independent by adding
1951      some "_d 0", etc. no effect.
1952    o for mnc output, fill the 'T' coordinate var with myTime and create a
1953      separate 'iter' variable for iteration count
1954    o pkg/diagnostics:
1955      add new capability: output of Global/Regional & per-level statistics ;
1956      tested against monitor output (including land & thSIce) on various exp.
1957    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1958    
1959    checkpoint57h_done
1960      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1961      data.diagnostics, data.gchem, data.ptracers) is done.
1962    
1963    o pkg/diagnostics: prepare for Global/Regional statistics.
1964      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1965    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1966      and rename it: DIFFERENT_MULTIPLE
1967    
1968    checkpoint57h_post
1969    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1970    o pkg/diagnostics: change output frequency, now in seconds (instead
1971      of Nb of iterations). This requires to change data.diagnostics.
1972    checkpoint57h_pre
1973    
1974    o in mnc, let the user create the output dir if both mnc_outdir_date
1975      and mnc_outdir_num are false
1976    o add fflags() to pkg/diagnostics which allows one to specify, on a
1977      per-file basis, the file precision [default behavior is unchanged]
1978    o added diagnostics to pkg/kpp, including computation of mixed layer
1979      depth based on a temperature/density criterion
1980    o updated verification/natl_box to test the new pkg/kpp diagnostics
1981    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1982    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1983    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1984      not mnc -- this mistake was found by JMC and is now corrected
1985    
1986    checkpoint57g_post
1987    o add Adams-Bashforth 3rd Order time stepping:
1988      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1989      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1990    checkpoint57g_pre
1991    
1992    o make lambda[Theta,Salt]ClimRelax spatially varying
1993      (default remains spatially uniform constant based on tau)
1994    o added new control variables
1995      * init. uVel, vVel, etanN
1996      * lambda[Theta,Salt]ClimRelax
1997    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1998      (suggested by G. Forget)
1999    
2000    checkpoint57f_post
2001    o add parameter "baseTime" = model base time = time at iteration zero
2002      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2003      account for baseTime shift
2004    o move Coriolis arrays from PARAMS.h to GRID.h
2005    checkpoint57f_pre
2006    
2007    o mnc-ifying the seaice package
2008    o introduced an alternative length scale calculation for use in the limiting
2009      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2010    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2011    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2012      as well as grad(vort3).  Made it compatible with both approximate form
2013      for the cubed sphere and full form of these gradients.  Added flag
2014      useFullLeith to select between approximate and full form.  
2015    o add "d0" in getcon.F to reduce differences between compilers/platforms
2016      update output.txt of exp. fizhi-gridalt-hs
2017    o change port_rand funtion to allow to set the seed.
2018    o fix obscure MNC bug involving conversion between reals and integers
2019      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2020        new version is now more standards-compliant
2021    o adjoint-related modifications
2022      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2023      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2024      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2025    
2026    checkpoint57e_post
2027    o Adding eddy stress controls a la Ferreira et al.
2028    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2029    
2030    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2031      update output.txt of exp. fizhi-gridalt-hs
2032    o add more "Z" dimensions and associated coordinate vars to MNC
2033    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2034    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2035      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2036      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2037      months and years.  Requires pkg/cal.
2038    o diagnostics: add pickup functionality
2039      - off by default for backwards compatibility
2040      - current version only uses MDSIO -- MNC will be added
2041    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2042    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2043    
2044    checkpoint57d_post
2045    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2046    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2047      output from the diagnostics package
2048    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2049    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2050      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2051    o add coordinate variables to the MNC output from the diagnostics package
2052    o change MNC-flags default value: true when useMNC=TRUE
2053    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2054      the ability (off by default) to read the grid information using MNC
2055    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2056    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2057    o do snap-shot diagnostics at the middle of the time-interval (instead of
2058      at the end).
2059    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2060      new test for AIM with thSIce + slab-ocean
2061    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2062    o move state variable diagnostics to the beginning of the time step ;
2063      (note: still needs some work specially for snap-shot diagnostics)
2064      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2065    
2066    checkpoint57c_post
2067    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2068    o generate new output.txt files on faulks with g77 & the new -ieee option
2069    checkpoint57c_pre
2070    
2071    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2072      update output.txt of exp. global_ocean.90x40x15
2073    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2074      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2075    o add saltFlux(+File) forcing capability with periodicExternalForcing
2076    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2077    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2078    o improvements for the MNC output from DIAGNOSTICS:
2079      - correct handling of the unlimitied dimension
2080      - all dims now have associated coordinate variables
2081      - variables located at U, V, and Corner ("Z") points are now written
2082        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2083        *all* data points are output
2084    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2085    o added pkg/seaice/seaice_monitor.F
2086    o mdsio_readfield.F can now read files visible only to master MPI process.
2087    o pkg/seaice: some test code for ice-modified ocean stress
2088    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2089      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2090      spurious negative numbers for precipitation and humidity.  Will cause
2091      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2092    o pkg/ctrl/
2093      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2094        May be enabled via doPackDiag
2095      *  introduce z-scaling of
2096         + gradient (doZscalePack) and
2097         + control (doZscaleUnpack)
2098    o pkg/mdsio/
2099      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2100      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2101    
2102    checkpoint57b_post
2103    o simplify options in diagnostics_fill arguments (remove weird combinations)
2104    o fix MNC coordinate variables so that they now contain per-face index
2105      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2106      general, EXCH2 grids are only aligned to a "local" coordinate system
2107    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2108    o Implement instantaneous output within pkg diagnostics:
2109      setting a negative frequency in data.diagnostics produces
2110     "snap-shot" output (as opposed to time-average if freq > 0)
2111    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2112      NOTE: change ptracer diagnostics name: use 2 characters to work with
2113            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2114    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2115      becomes the coordinate variable for the 'T' dimension
2116    o add CF-style coordinate variables to MNC
2117      - just a first cut:  numbers are meaningless on the cubesphere and
2118        missing along the T axis but otherwise it works!
2119    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2120    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2121    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2122      this is based directly on what the model compute, so that the content of
2123      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2124    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2125    o clean up build options files for SunOS, in particular
2126      - remove -traditional from xmakedepend
2127      - change -xarch=v9 to -xarch=native for f77
2128      - restore use of make (not gmake)
2129      - add CC=gcc if using g77
2130    o changes per discussion of AM, JMC, & EH3 today:
2131      - move redundant "grid" variables out of "state" -- in preparation of
2132        creating proper CF-style coordinate variables and in recognition
2133        that any/all grid variables can be easily copied (eg. w/NCO) from
2134        the grid files into any of the other NetCDF files
2135      - *always* output grid variables with MDSIO (this will eventually be
2136        changed)
2137      - output MNC grid file if useMNC is true
2138    o every instance of _END_MASTER() has been found and replaced with
2139      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2140      preprocessors
2141    o re-arrange diagnostics pkg initialisation:
2142     - allow each package to extend the available diagnostics list
2143     - add some checking and fix small problems (multi-threaded, ...)
2144     - new S/R diagnostics_fill (replace fill_diagnostics):
2145       look through the short list of active diag. (instead of the long list)
2146       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2147    
2148    checkpoint57a_post
2149    o this set of changes restores TAMC compatibility
2150      tested for global_ocean.90x40x15 adjoint on trough
2151      (what a pain)
2152    
2153    checkpoint57a_pre
2154    o some modifs in tools/build_options for sunos
2155    o call ctrl_pack for ctrl at end for optimcycle=0
2156    
2157    checkpoint57
2158    o add horizontal bi-harmonic viscosity for vertical velocity
2159      - new parameter viscA4W (defaults to viscA4)
2160      - affects only non-hydrostatic code
2161      - to be done: no-slip lateral boundary conditions
2162    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2163    o implement Implicit Vertical advection for pTracers
2164    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2165      (implemented also for implicit vertical diffusion & advection)
2166    o OBCS: extend application of tracer open boundary conditions
2167      to a strip beyond the boundary of width Olx/Oly
2168    o add call monitor to TAF set of required calls (flow directives)
2169      and include in natl_box_adjoint
2170    o untangle a few ifdefs related to cost, ctrl, autodiff
2171      untangel a few ALLOW_ECCO_OPTIMIZATION
2172    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2173      (theta2, salt2 in ecco_cost_weights)
2174    
2175    checkpoint56c_post
2176    o OBCS as control variables
2177      - update ctrl_ad_diff.list, obcs_ad_diff.list
2178      - remove balance of obcs controls from default
2179      - fix index bug nobcs in ctrl_init
2180      - fix dummy fields filen in ctrl_pack
2181      - add dummy weights for obcs
2182    o lsopt: comment out fort.94 output
2183    o optim:
2184      - remove unnecessary header files
2185      - adjusted namelists
2186      - add xerbla.F to Makefile
2187    o exf:
2188      - multiple modifications of exf_check_range
2189      - unit change in exf_init_runoff from [m/year] to [m/s]
2190    o mdsio:
2191      - i/o-vector change debugLevel from debLevA to debLevB
2192    
2193    checkpoint56b_post
2194    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2195      is called from DO_THE_MODEL_IO
2196      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2197      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2198      - clean up PTRACERS_WRITE_TIMEAVE a little
2199    o add another verification experiment that tests both the cfc-pkg and
2200      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2201      reactive tendencies treated inline with regular timestepping
2202    o testreport previously did a lousy job of comparing small numbers, so
2203      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2204      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2205      testreport.
2206    o ptracers_monitor: bug fix for MPI
2207    
2208    checkpoint56a_post
2209    o GCHEM: finish reorganizating the package
2210      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2211        (introduces another 3D-array for each passive tracer, but only if
2212        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2213        gchemTendency is not needed because the timestep is done separately)
2214      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2215      - GCHEM is now---more or less cleanly---separate from PTRACERS
2216      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2217        so clear to me how that should be done in a general way.
2218    o CFC: improve formatting of output in CFC_ATMOS
2219    o PTRACERS:
2220      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2221        that ALL experiments with ptracers enable can be checked. This makes
2222        GCHEM_MONITOR obsolete.
2223      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2224        monitorFreq
2225      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2226    o add PTRACERS (PTR0[1-5]) to testreport output
2227    o exf_check_range:
2228      * default changed to .TRUE.
2229      * will check values for niter0 if debLevA, every timestep if debLevB
2230      * STOP in exf_check_range if 'out of range'
2231      * range chosen generous to allow for potential extema
2232      TBD: a version with stricter range
2233           permitted range would be runtime parameters
2234    o GMredi:
2235      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2236      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2237      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2238    o GCHEM:
2239      - move call to GCHEM_FORCING_SEP, so that it is now called before
2240        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2241      - introduced a useGCHEM runtime flag and applied it everywhere.
2242      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2243        this flag is now only visible within GCHEM-pkg routines.
2244      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2245        be replaced by a 3D array that is computed before thermodynamics; for
2246        this, the tracer ID iTracer had to be included into the parameter list
2247        of ptracers_forcing
2248      - set up forward_step to call gchem_forcing, that will replace
2249        gchem_forcing_int in ptracers_forcing
2250      - cleaning up
2251    o small cleaning of exch2: remove files that are also in eesupp/src
2252    
2253    checkpoint56
2254    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2255    o mnc: cleanup "full" files--fixes out-of-memory problem
2256    o ECCO-GODAE
2257      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2258      * fully merged and updated from SIO code
2259        windstress sign change affects
2260        - exf_inscal_[u/v]stress
2261        - sign of xx_tau[u/v] adjustments
2262        - signs in cost_scat
2263      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2264      * natl_box_adjoint updated and compressed
2265      * 2-level checkpoint switch added
2266        (tested in EXP. 1 of natl_box_adjoint)
2267      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2268    o SVD
2269      * first complete, non-hacked version for SVD calculations
2270      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2271        performed via direct access files admtlm_vector.it????
2272        (via ctrl_[un]pack)
2273      * optimcycle is used for ARPACK iteration counter
2274        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2275      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2276        and add linear transforms where necessary
2277      * controls are initial/final SST, SSS (can be extended; need to check
2278        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2279    o mdsio: filename info to both stderr, stdout
2280    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2281      from sign change
2282    
2283    checkpoint55j_post
2284    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2285      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2286    o add consistent build directories and .cvsignore files to verification
2287    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2288    o make all subroutines 30 or less characters in length for certain older
2289      compilers to work (a thorough search only turns up two routines in
2290      pkg/ptracers)
2291    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2292      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2293    
2294    checkpoint55i_post
2295    o change arrays for total vertical diffusivity (2.D if explicit,
2296      3.D if implicit) ; each ptracer uses its own background value.
2297    o added mnc/NetCDF output capability to ocn_compon_interf
2298      - added bits to verification/cpl_aim+ocn so that it can run on
2299        ITRDA and other clusters without the mpirun "-wd" option
2300    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2301      configuration
2302    o give MNC the ability to create additional files rather than
2303      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2304      - the default is just less than 2GB which is a practical limit
2305        on many systems
2306    o Compute the non-local term using either KPP vertical diffusivity (=default)
2307       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2308    
2309    checkpoint55h_post
2310    o add verification test "vermix"
2311    o remove all the *_ioinc flags and replace with the single global
2312      outputTypesInclusive flag
2313    o allow to set a vertical profile of vertical diffusivity for T & S
2314    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2315    o useMNC moved from data.mnc to data.pkg
2316    
2317    checkpoint55g_post
2318    o Renaming carbon AD experiments to comply with testreport conventions
2319    o Updating adjoint of Held-Suarez hs94.1x64x5
2320    o Fixing directives for non-ECCO forward_step, after ECCO directives
2321      have been fixed to avoid recomp. of do_oceanic_phys
2322      Works well for global_ocean.90x40x15,
2323      but recomp. issue remains for carbon
2324    o Updating adjoint output for natl_box_adjoint after
2325      pkg/ecco has been modified (see taga c55d_post)
2326    
2327    checkpoint55f_post
2328    o rename to timeave_init_fixed
2329    
2330    checkpoint55e_post
2331    o some delicate re-shuffle of store directives to avoid one
2332      extra call of do_oceanic_physics
2333      affects ecco_the_main_loop.F, do_oceanic_physics.F
2334      checkpoint_lev1_directives.h
2335    o NB: this may break global_ocean adjoint temporarily,
2336      but it is clear how to fix it. Will do later, need this now.
2337    
2338    checkpoint55d_post
2339    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2340    o ecco_cost_weights is modified to 1x1 runs
2341    o modifs to allow observations to be read in as
2342      single file or yearly files
2343    o enable to read exf forcing fields as either
2344      single file or yearly files (flag useExfYearlyFields)
2345    checkpoint55d_pre
2346    
2347    o switch between 2-level and 3-level checkpointing
2348    o add ability of MNC to write local and "partial" (eg. 2D slices where
2349      the full 3D field is never actually stored) arrays to NetCDF files
2350      with the correct (that is, the complete multi-dimensional) set of
2351      array indicies
2352      - used in mom_vecinv() to write the diagFreq output
2353      - tested (demonstrated) in verification/aim.5l_cs
2354    o further mnc-ification
2355      - add verification/lab_sea to the list with mnc setups
2356      - fix undefined mnc v-names in cd_code
2357      - add kpp to mnc output (both snapshot and timeave)
2358    o non-hydrostatic code
2359      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2360        in calc_gw.F
2361      - defaults to viscAh
2362      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2363        friction or Leith) in non-hydrostatic mode, as long as there is
2364        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2365    o pkg/cost
2366      extend simple cost functions to treat time mean quantities
2367      (T,U,V) via cost_accumulate_state from cost_tile
2368    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2369        be 2 times larger than the minimum size the advection scheme requires.
2370        now get a perfect conservation of salt in advect_cs test-exp (updated)
2371    o GGL90 (Gaspar's TKE mixed layer)
2372      - add horizontal diffusion of TKE, requires exchanges in
2373        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2374        default. In OPA there is no horizontal diffusion of TKE but the
2375        mixing coefficients are computed from a horizontal average of TKE of
2376        6 points or so. I think that diffusion has a little more physical
2377        justification.
2378      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2379        was in vain)
2380      - mask tke-variable in ggl90_init
2381    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2382    o fix biharmonic diffusion on CS-grid.
2383    o more obcs stuff
2384      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2385        for reading boundary values. This routine is called from
2386        obcs_prescribe_read
2387      - updated obcs_check
2388      - changed sponge layer relaxation parameter units for days to seconds
2389      - turned off sponge layer by default
2390      - changed argument list of OBCS_CALC to myTime+deltaTclock
2391      - fixed about 35 bugs in obcs_external_fields_load
2392    
2393    checkpoint55c_post
2394    o obcs stuff
2395      - new runtime flags useOBCSprescribe, useOBCSbalance
2396      - re-arranged obcs_calc
2397      - moved exf_getobcs to obcs_prescibe_read
2398        obcs_prescibe_read is called after ORLANSKI stuff
2399        and independent of it (executable can contain all).
2400      - updated obcs_check
2401      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2402        These may be necessary only if tangential velocities are
2403        prescribed at OB, not sure, needs testing.
2404    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2405      which simplifies the calls and passes the ifc check-bounds test
2406    
2407    checkpoint55b_post
2408    o add a 2D scalar, Z location, exchange_2 routine.
2409    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2410      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2411      affects advect_cs results (for the wrong reason): update output.txt
2412    o use a more standard discretization for biharmonic viscosity ;
2413     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2414      affects results of dome set-up: update output.txt
2415    o fix gad_advection.F (CubedSphere part), back to version 1.23
2416    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2417    
2418    checkpoint55a_post
2419    o merged code to
2420      * prescribe/read time-dependent open boundaries
2421        (works in conjunction with exf, cal)
2422      * sponge layer code for open boundaries
2423      * each boundary N/S/E/W now has its own CPP option
2424        (healthy for the adjoint)
2425    
2426    checkpoint55
2427    o up-to-date adjoint of previous breaks
2428      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2429      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2430      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2431      - carbon: * remove tr1-related adjoint verification
2432                * add ptracer as control variable
2433    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2434      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2435    
2436    checkpoint54f_post
2437    o in verification/carbin/ remove experiment related to
2438      ALLOW_PASSIVE_TRACER (array tr1 etc)
2439      code_ad/ input_ad/ results_ad
2440    
2441    o add two new packages
2442      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2443        + subject to optimization (memory)
2444      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2445        + subject to reordering (many GOTOs in the original code)
2446        + so far opps is called for every (i,j) point, and then operates in
2447          the vertical; one may want to reorder the scheme in order operate in
2448          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2449          fields)
2450    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2451      - all verification tests compile and run with linux_ia32_g77
2452      - defaults are compatible with current input files--nothing
2453        should change if you were not previously using MNC
2454      - MNC output has been added in numerous places (eg. timeave)
2455        but there are still a few writes not yet do-able with MNC
2456        (this is in progress)
2457      - flags now allow for either/or/both use of MDSIO and MNC and
2458        documentation will soon follow
2459      - numerous small formatting cleanups for ProTeX
2460    o add version info (via BUILD_INFO.h) to MNC and stdout
2461    
2462    checkpoint54e_post
2463    o add two new packages
2464      - pp81 (Packanowski and Philander, 1981), Richardson number and
2465        stratification dependent mixing
2466      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2467      - these scheme operate in a similar manner as KPP (without ghat, of
2468        course), however there is only one diffusivity that is used for both
2469        temperature and salinity (and passive tracers)
2470    o add offline package
2471    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2472      provided by Stephanie Dutkiewicz
2473    o genmake2: add ability to search for C compilers and cleanup test output
2474      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2475    
2476    checkpoint54d_post
2477    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2478    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2479      leading to additional shift by 5 days each year of integration
2480       (i.e. leading to considerable offset over the years)
2481    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2482    o start with no AB and no initial filtering (staggerTimeStep):
2483      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2484    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2485      (external loading & cpl import/export stay in forward_step.F)
2486    o update coupling interface to work with new staggerTimeStep
2487    o change MDSIO ptracers_pickup.
2488    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2489    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2490    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2491    
2492    checkpoint54c_post
2493    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2494      this affects (truncation error) output.txt of test-exp:
2495       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2496    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2497    o change Qnet to always be the net heat flux, (+upward).
2498      affects (truncation error) output of natl_box exp.: updated
2499    o define the max number of passive tracers in PTRACERS_SIZE.h
2500    o start to test mnc routinely in exp0
2501    o add sea-ice loading (sIceLoad) as a new forcing field.
2502    
2503    checkpoint54b_post
2504    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2505       impressive on Altix and Opteron systems)
2506    o diagnostics can now write NetCDF files through the mnc package
2507    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2508    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2509    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2510      affects (truncation error) output of lab_sea & natl_box exp.: updated
2511    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2512    
2513    checkpoint54a_post
2514    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2515    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2516    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2517    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2518      + internal_wave (shift in writing cg2d_ini_res)
2519    checkpoint54a_pre
2520    
2521    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2522      - modified verification/lab_sea and natl_box_adjoint accordingly
2523    
2524    checkpoint54
2525    checkpoint53g_post
2526    o prepare splitting of thermodynamics: store convect.counter in common block
2527    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2528      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2529    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2530    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2531    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2532    o restore adjointability
2533    
2534    checkpoint53f_post
2535    o modifications that affect AIM experiment results (update output.txt):
2536      - no advection of S at top interface Nr (pkg/generic_advdiff)
2537      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2538    o AIM pkg:
2539      - include stability function into surf.Flux derivative relative to Tsurf
2540      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2541    
2542    checkpoint53e_post
2543    o merged cylindrical coord configuration
2544    o added rotating_tank experiment
2545    checkpoint53e_pre
2546    
2547    checkpoint53d_post
2548    o faulks upgraded: re-generate output.txt that have changed:
2549       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2550    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2551    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2552    o added Sadourny discretization of Coriolis
2553      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2554      - re-enabled use of omega3 (useAbsVorticity)
2555    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2556      vector-invariant equations
2557      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2558    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2559      hopefully without new bugs
2560      - still to do: biharmonic friction for non-hydrostatic w
2561    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2562    o regenerated output for global_ocean_ebm (using -ieee)
2563    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2564      of mom_common/
2565      - simple re-arrangement of instructions within computing loop
2566    checkpoint53d_pre
2567    
2568    checkpoint53c_post
2569    o new version of coupler for AIM+thSIce and Ocean models
2570     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2571     - land: change Evaporation of snow
2572     - aim with thSIce: fix bug in snow-precip.
2573    o changes to calc_gw.F
2574     - bug fix for w^2 term near the bottom boundary
2575     - (hopefully) improve the lateral slip boundary condtions for use with
2576        partial/looped cells
2577      - because the bug fix changes two verification experiments anyway (exp5
2578        and plume on slope), change the lateral boundary condition from half slip
2579        to the value of no_slip_sides
2580    o ebm package wasnt quite up to the parallel task. Fixed that.
2581    o Adjoint of EBM package + verification
2582      * TLM OK
2583      * ADM not sufficient accuracy yet (needs further testing)
2584    
2585    checkpoint53b_post
2586    o Commiting new energy balance model to repository
2587      * package is pkg/ebm
2588      * verif. is verification/global_ocean_ebm
2589      * references are in ebm_driver.F
2590    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2591    C        Global thermohaline circulation. Part I:
2592    C        Sensitivity to atmospheric moisture transport.
2593    C        J. Climate 12(1), 71-82
2594    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2595    C        Global thermohaline circulation. Part II:
2596    C        Sensitivity with interactive transport.
2597    C        J. Climate 12(1), 83-91
2598    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2599    C        Destabilization of the thermohaline circulation
2600    C        by atmospheric eddy transports.
2601    C        J. Climate 7(12), 1870-1882
2602    o Will need long integration testing.
2603    checkpoint53b_pre
2604    
2605    o created pkg/mom_common in preparation for variable viscosity code
2606    o renamed and split ini_mnc_io
2607    o pkg/land: only liquid water can diffuse or run-off
2608    o AIM using land: soil wetness availability account for snow
2609    o added printMapIncludesZeros to EEPARMS namelist
2610    
2611    checkpoint53a_post
2612    o restore TAMC compatiility for exf_constants.h
2613      (no usage of _d in .h)
2614    o Additional storing in KPP in an attempt to fix
2615      TAMC problem with adjoint of KPP code.
2616      (no success...)
2617      Identical code works fine with TAF.
2618    o Fixed verification/natl_box_adjoint experiments.
2619      Initial conditions for Experiments 4 and 5 are now
2620      set to "SEAICE_initialHEFF=0", which is more reasonable,
2621      and hence gives results closer to that of Experiment 2.
2622      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2623    
2624    checkpoint53
2625    o stable checkpoint with up to date adjoint
2626      TLM tests only run for 1st grdchk at the moment. Its unclear if
2627      this is a code problem or a problem with resetting code for g_
2628      variables that is being autogenerated wrong.
2629      Otherwise:
2630       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2631       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2632         are both still in chaos following their security messes.
2633    
2634    checkpoint52n_post
2635    o various build (mostly genmake2) changes including:
2636      - ability to build/run more easily within Cygwin and MacOS X
2637      - more complicated Makefiles with a stronger dependence on Gnu Make
2638    o pkg/seaice modifications
2639      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2640        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2641        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2642      - changed proxy for geostrophic velocity and updated
2643        verification/lab_sea/results/* accordingly
2644      - removed ADI dynamic solver from pkg/seaice
2645      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2646        they caused a segmentation fault under certain circumstances
2647      - removed unused field WATR
2648    o bug fix in exf-package:
2649      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2650         now reflect that.
2651    o small fixes in the cal-package:
2652      - set reference date to first of January for the 'model'-calendar
2653      - failing of cal_CheckDate in cal_FullDate now actually results in a
2654        warning
2655    o small modifications in exf-package to increase flexibility:
2656      - change climtempfreeze from a constant to a runtime parameter that
2657        is specified in data.exf_clim (default = -1.9)
2658      - introduce runtime parameter windstressmax (default = 2.0) that is
2659        specified in data.exf
2660    o fix in pkg/thsice:
2661      - update Evap (Tsf changes) to be consistent with Latent heat flux
2662      - maintain snow precipitation unchanged (even if Tsf >=0).
2663     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2664    
2665    checkpoint52m_post
2666    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2667      this does not change any of the results, because myIter=0 in swfrac always
2668      lead to jwtype=2 (the default anyway), but the call makes little sense
2669      as a default
2670    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2671    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2672      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2673    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2674    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2675    o extending useSingleCpuIO option to work with new exch2 I/O format
2676      - old-style, missing-tile I/O is still accessible by defining CPP
2677        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2678    o monitor package can write to NetCDF files and/or STDOUT
2679    o fix re-definition bug in MNC_GRID_INIT_ALL()
2680    o doc/api_reference added
2681      - a framework for building an API Reference Manual using all
2682        the "protex" comments embedded in the code
2683      - see pkg/generic_advdiff, pkg/mnc for examples
2684    o MNC:
2685      - make myThid the last argument for all subroutines
2686      - new default for the grid files: NO halos
2687      - add useMNC and other run-time flags
2688      - separate per-file-group handling of the unlimited dimension
2689      - early initialization of MNC w/ flags read at the eeboot stage
2690        and lookup tables set in initialize_fixed
2691      - write all MNC output to a freshly-created directory
2692    o thermodynamics sea-ice (thsice) is now tested with testreport.
2693    o test exp. advect_cs: use the standard cs32 grid ; update output.
2694    o Added functionality to grdchk:
2695      pick global i,j,k position (or nearest wet) where to perform check.
2696    
2697    checkpoint52l_post
2698    o new land formulation:
2699      a) use ground enthalpy as prognostic variable to ensure exact
2700         energy conservation.
2701      b) account for water temperature and for latent heat of freezing
2702         in all processes (rain, run-off, ground storage)
2703      c) compute surface and ground temperature implicitly.
2704    o aim_v23 modification for new land model:
2705      a) Treat separately land / ocean / sea-ice surface fluxes
2706         to allow implicit computation of land & sea-ice surface temp.
2707      b) add snow precipitation.
2708    checkpoint52l_pre
2709    
2710    o fix problem (when 1 tile is empty) in min/max monitor.
2711    o fix bug in timeAve (u,vZetatave in common block)
2712    o no restoring terms under ice for pkg/seaice
2713    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2714    o bug fix for pkg/seaice pickups
2715    o change MNC call locations and add coordinate attributes
2716    o mask vorticity at the corner ; affects global_ocean.cs output
2717    o fix ini_curvilinear_grid ; test CS experiments with mpi
2718    o aim.5l_cs: modify sea-ice fraction input file ; update output
2719    o exf: Adding simple range check routine for exf fields after read
2720    
2721    checkpoint52k_post
2722    o removed top-level directory "diags"
2723      - we migrated these functions to pkg/timeave a long time ago
2724    o fixed bug introduced in pkg/monitor
2725    o accuracy ctrlprec = 32 insuffient for gradient checks using
2726      averaged fields (I/O via cost_averages)
2727      -> use ctrl.h in active_file*.F to control I/O precision.
2728    o paramter list of CALL ADTHE_MAIN_LOOP
2729    o added initial do_the_model_io to ecco
2730    o set all ...Freq to zero after cost_final
2731      taveFreq, dumpFreq, pChkptFreq
2732    o MAIN and ECCO differentiability restored
2733    
2734    checkpoint52j_post
2735    o fix nchklev in tamc.h for global_ocean...
2736    o Bringing flow and store directives up-to-date
2737    o Really weird thing!
2738      call do_the_model_io from the_main_loop with parameters
2739      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2740      TAF places a faulty re-call of initialise_varia
2741      after cost_final call which should not be there!
2742    checkpoint52j_pre
2743    
2744    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2745      error messages
2746    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2747    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2748      debug output
2749    o modfied mdsio_writefield.F to handle non-global files under exch2
2750    o update AIM Cubed-Sphere exp (aim.5l_cs):
2751      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2752    o update AIM Equatorial Channel exp:
2753      use standard aim_v23 pkg and change the SST fields to be more realistic.
2754    o globalFile now works with exch2
2755    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2756      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2757    o limit timeave output for hi-res integrations
2758    
2759    checkpoint52i_post
2760    o removed CPP_EEOPTIONS.h from verification/*/code
2761    o updated the tiling for global_ocean_pressure
2762    checkpoint52i_pre
2763    
2764    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2765      the old pkg/aim).
2766    
2767    checkpoint52h_pre
2768    o shortened offending lines in exch2_send_rx?.template
2769    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2770    o genmake2: add build & execute test for NetCDF code
2771    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2772      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2773    o added useSingleCPUIO flag to monitor.F and mon_out.F
2774    o added temporary hack for sea-ice dynamics on the cube:
2775      metric terms are ignored and it is assumed that
2776      there is no sea-ice on cube faces 1, 2, 4, and 5.
2777    
2778    checkpoint52f_post
2779    o added exch2 cube routines to pkg/exch2
2780    o modified hs94.cs-32x32x5 to use it
2781    o added new grid files to hs94.cs-32x32x5
2782    checkpoint52f_pre
2783    
2784    checkpoint52e_post
2785    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2786      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2787    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2788      to work with implicit vertical advection and AB ;
2789    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2790    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2791     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2792    checkpoint52e_pre
2793    
2794    o fix bug in impldiff when Nr=1 or Nr=2.
2795    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2796    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2797    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2798      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2799    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2800    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2801    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2802    
2803    checkpoint52d_post
2804    o re-tiled many expts to allow comparison in multi-processor mode
2805      - updated output accordingly
2806      - changed hs94.128x64x5 to use intial T from file rather than use the
2807        random number generator
2808    o add infrastructure in model routines for fizhi and gridalt packages
2809    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2810    o changes to permit hi-res, cubed-sphere, configuration
2811      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2812      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2813      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2814        of surface winds for the cube
2815      (A verification experiment, based on global_ocean.cs32x15, but with
2816       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2817       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2818       complete with example surface forcing files and matlab scripts to look
2819       at the output and compare it with that of global_ocean.cs32x15.)
2820    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2821       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2822       to conform to the common rule.
2823    o check-in the first version of the coupler + interfaces for multi-components
2824       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2825       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2826       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2827       - ocean and atmos. share the same horizontal grid (no interpolation).
2828       - exchanges between component and coupler is done in forward_step
2829    o new verification experiment, cpl_aim+ocn:
2830       coupled ocean - AIM atmosphere on cs32 grid.
2831    
2832    checkpoint52d_pre
2833    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2834    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2835    
2836    checkpoint52c_post
2837    o Fixing OPTIONS files for use of exf:
2838      - ALLOW_ECCO not needed
2839      - ECCO_CPPOPTIONS.h should not be included from
2840        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2841        as has been the case in the past
2842      - All cal/exf related options are currently set in
2843        single header file. Should remain so until we
2844        agree on a consistent new policy.
2845    o Removed all CPP options for cal package.
2846      cal has no more CPP options.
2847    o modified STOREs in GAD_ADVECTION
2848    o corrected key comp. for passkey
2849    
2850    checkpoint52b_post
2851    o new version: "thsice" of thermodynamic sea-ice pkg:
2852     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2853     - modify fluxes but do not change theta directly;
2854     - light cleaning of bulk_force pkg (still needed with thsice).
2855     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2856       + output_thsice.txt to test thsice & bulk_force pkgs.
2857    o put back grid & coriolis monitor output.
2858    checkpoint52b_pre
2859    
2860    o call "do_the_model_io" at the beginning (=> dump initial state)
2861    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2862    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2863      (need info on NUMBER_OF_PTRACERS)
2864    o missing PTRACERS headers in some routines
2865    o default tamc.h in pkg/autodiff supposed to crash
2866      to ensure proper customization
2867    
2868    checkpoint52a_post
2869    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2870      - moved surfaceTendencyTice from pkg/seaice to main code
2871      - subroutine FREEZE_SURFACE now limits only surface temperature
2872        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2873        => new output.txt for global_ocean.cs32x15 & global_with_exf
2874      - keep the old version of FREEZE for backward compatibility;
2875        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2876      - corresponding modifs for TAF directives
2877    o added surface flux output variables to TIMEAVE_STATVARS
2878    o time-averaged output for pkg/ptracers
2879    o fix problem with ECCO-related divided adjoint
2880      snapshot file was missing some ad-variables,
2881      but no warning issued by TAF
2882    
2883    checkpoint52a_pre
2884    o some bug fixes for #undef REAL4_IS_SLOW
2885    
2886    checkpoint52 = ecco_c52_e35
2887    o after testing adjoints of checkpoint51u_post
2888    
2889    checkpoint51u_post
2890    o this is the post-merge tag of the ecco-branch
2891      (needs another clean checkout and re-testing)
2892    o various natl_box_adjoint configs and results
2893      but no input fields
2894    o obcs adjoint not yet merged!
2895    o adding ECCO global 1x1 and 2x2 degree configs
2896    o updated/extended some store directives for seaice
2897    o pkg/ecco now containes ecco-specific part of cost function
2898    o top level routines the_main_loop, forward_step
2899      supersede those in model/src/
2900      previous input data.cost now in data.ecco
2901      (new namelist ecco_cost_nml)
2902    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2903    
2904    checkpoint51t_post
2905    o this is the pre-merge tag of the ecco-branch
2906    
2907    checkpoint51s_post
2908    o cleanup: removed various obsolete #define-s
2909    o pkg/grdchk
2910      - renamed 'ph-grd 3' to 'grad-res'
2911      - merged from ecco-branch
2912        (remaining bug fixes for obcs gradient checks)
2913      - additional high-precision output for testreport
2914        (grep for 'precision_grdchk_result')
2915    
2916    checkpoint51r_post
2917    o cleaned up or removed CPP_OPTIONS.h files
2918    o updated results for some of the tests to reflect the new
2919      optfiles (-ieee: -O0 instead of -O3)
2920    
2921    checkpoint51q_post
2922    o cd_code:
2923      - moved cd_scheme.F -> cd_code_scheme.F
2924      - separate read_checkpoint from cd_code_ini_vars.F
2925      - separated cd_code part from write_checkpoint
2926      - updated AD_SOURCE, generated .flow
2927      - added CD_CODE_VARS.h to the_main_loop
2928      - Moving cd_code specific store dir.s to pkg/cd_code
2929    o ctrl package totally restructured
2930      - pack/unpack now optional and decoupled from
2931        xx_/adxx_ I/O
2932      - ctrl_pack/unpack cleaned
2933        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2934      - confined inclusion of AD_CONFIG.h to where necessary.
2935    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2936    
2937    checkpoint51p_post
2938    o create initial cd_code package
2939      - WARNING: the initialization of fields within packages
2940        is broken because INI_FIELDS (where READ_CHECKPOINT is
2941        called) is called *before* PACKAGES_INIT_VARIABLES.
2942        This seems to be backwards since
2943        1) its important to initially zero the entire field including
2944           the "halo" region
2945        2) zeroing needs to be done *before* reading pickup info
2946           and the pickup call might or might not happen in any
2947           particular run
2948      - this needs an overhaul for R2
2949    o cleanup verification/*/code/GMREDI_OPTIONS.h
2950    o cleanup testreport
2951    
2952    checkpoint51o_post
2953    o bringing AD-related verif's up to date with genmake2
2954      - carbon/
2955      - global_ocean.90x40x15/
2956      - hs.94.1x64x5/
2957      - (front_relax/ )
2958    o (more) consistent directory structure for AD-related verif.'s
2959    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2960    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2961    o bug fix in find_alpha.F for MDJWF:
2962      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2963        change rho -> rho-rhoConst
2964      - replace call find_rho to find_rhonum
2965    o initialisation of rFlx extended to full array (required by TAF)
2966      and shifted to thermodynamics
2967    o removed PTRACERS.h in ptracers routine
2968    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2969    o Correcting initialisations for fVerU, fVerV.
2970    o helping TAF to recognize dependency on kUp for
2971      fVerU, fVerV
2972    o Replacing delZ by delR in pkg/ctrl/
2973    checkpoint51o_pre
2974    
2975    o undid all of cp51 pending some cleanups and discussion
2976    o added the [#include "AD_CONFIG.h"] statement to all files that need
2977       it for adjoint/tl #defines
2978     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2979     o removed tools/genmake since it no longer works
2980    
2981    checkpoint51n_post
2982    o modifications to make FREEZE flux visible to pkg/kpp
2983      - moved surfaceTendencyTice from pkg/seaice to main code
2984      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2985      - subroutine FREEZE now limits only surface temperature
2986        (this means new output.txt for global_ocean.90x40x15,
2987         global_ocean.cs32x15, and global_with_exf)
2988    o added surface flux output variables to TIMEAVE_STATVARS
2989    
2990    checkpoint51n_pre
2991    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2992    o added [#include "AD_CONFIG.h"] to all files that use the following
2993      defines:
2994      - ALLOW_ADJOINT_RUN
2995      - ALLOW_TANGENTLINEAR_RUN
2996      - ALLOW_ECCO_OPTIMIZATION
2997    
2998    checkpoint51m_post
2999    o incorporating changes to get TAMC/TAF working in genmake2
3000      - added new TAMC/TAF targets to the Makefile
3001      - various cleanups related to package handling
3002      - these changes should have no impact on the forward model
3003    
3004    checkpoint51l_post
3005    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3006     - faster algorithm for cal_addtime.F
3007     - higher precision arithmetic, where needed
3008     - pkg/exf *startdate variables changed from calendar date to
3009       model integration time
3010    
3011    checkpoint51l_pre
3012    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3013    o enable to apply restoring on S & T only in a latitude band.
3014    o update output (external_forcing_surf modif. change truncation errors)
3015       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3016    
3017    checkpoint51k_post
3018    o change default to: useNHMTerms=.FALSE.
3019     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3020       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3021     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3022        exp1, ideal_2D_oce
3023     - change data file of oceanic exp (leave the results unchanged for now)
3024       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3025    o set gravitySign automatically according to the vertical coordinate used
3026      (and change sign: back to "logical" value: +1 when R increases downward)
3027    o added an include barrier to the default CPP_OPTIONS.h and
3028      removed the #include "PACKAGES_CONFIG.h" from it
3029    o fix a bug in mom_fluxform (from chk51j_post)
3030    
3031    checkpoint51j_post
3032    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3033    o adjusted some flow directives (dynamics, thermodynamics)
3034    o added cubed-sphere case to test cost function
3035    o heckpoint_lev?_directives.h now include
3036      pkg-specific directives, whenever those are enabled.
3037    o Moving pkg-specific flow directives to corresponding pkg
3038      Moving pkg-specific differentiation list to corresponding pkg
3039      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3040      ---> conventions are
3041           - pkg_ad.flow
3042           - pkg_ad_diff.list
3043           - pkg_ad_check_lev?_dir.h
3044    
3045    checkpoint51i_post
3046    o merge of the branch-genmake2
3047      - knowingly breaks the older genmake
3048      - automatic generation of all ALLOW_${PKG_NAME} defines
3049      - new testreport supersedes older testscript
3050    o large number of package inclusion and header cleanups
3051    checkpoint51i_pre
3052    
3053    o new output for adjoin of global ocean vector invariant
3054    o fix for checkpoint of thermodynamic seaice and bulk_force
3055    o Steph gchem various cleanups
3056    
3057    checkpoint 51h_pre
3058    o fixed some single quotes
3059    o modify gchem pkg to be more versatile
3060    o modifications to clean up dic pkg
3061    o add pkg/cfc
3062    
3063    checkpoint51g_post
3064    o provide links for ARPACK and ADM*TLM
3065    o start removing verification/vero/
3066    o update AD-related stuff
3067      (in particular some IF-statements in model/src/ routines)
3068    o adding to verification/global_ocean.90x40x15/ adjoint of
3069      vector invariant setup
3070    
3071    checkpoint51f_post
3072    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3073    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3074      of tracer Green's fucntions for ocean inversion project.
3075    
3076    checkpoint51f_pre
3077    o Added on-the-fly spatial interpolation capability
3078        "USE_EXF_INTERPOLATION" to pkg/exf.
3079      - This is a temporary Cartesian-grid hack until
3080        the super-duper ESMF coupler becomes available.
3081      - See verification/global_with_exf/README for usage example.
3082      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3083        flags and modified pkg/seaice accordingly.
3084    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3085        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3086        non-local transport term.
3087    
3088    checkpoint51e_post
3089    o pkg/mom_vecinv:
3090      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3091      - add time-ave diagnostic of vorticity advection.
3092    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3093    o atmospheric geopotential: - include water vapor effect;
3094                                - use p^kappa in p* scaling.
3095    o land pkg: read initial state from files.
3096    o AIM : add stratospheric drag in the upper level
3097    
3098    checkpoint51d_post
3099    o change function ILNBLNK (=> last non-blank char.) to return zero
3100      (instead of the string length) when the string. char is empty
3101    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3102    o modif's to restore TAMC compatibility
3103      - avoid "_d" constructs in PARAMETER declarations
3104      - avoid interrupting lines by comment lines
3105    o Use cluster local disks for purely local I/O
3106      vs. globally visible disks needed for ctrl stuff
3107      (merged from ecco-branch)
3108      - new active_file_loc... and mdsio_..._loc routines
3109      - affected packages: autodiff, ctrl, grdchk, mdsio
3110    
3111    checkpoint51c_post
3112    o introducing integer flag debugLevel
3113      - debLevZero: suppress all output
3114      - debLevA: standard
3115      - debLevB: equivalent to current debugMode=.TRUE.
3116    o introducing pathname variable mdsioLocalDir for mdsio
3117      that can be specified at runtime
3118      (relevant for cluster I/O to local disk)
3119    `
3120    >>>checkpoint51b_post
3121    adjoint of ptracers
3122    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3123    o extended state in checkpoint_lev?, etc.
3124    o alternative ctrl/cost with tr1 or ptracer
3125    o new comlev1_bibj_ptracers
3126    o new ptracers.flow
3127    o made ptracers_forcing same as external_forcing_s
3128    o added verification for adjoint with ptracers
3129      - adm. grdchk fail so far
3130      - tlm. grdchk OK
3131      - checked tapelev/comlev recomputations: OK
3132    <<<checkpoint51b_pre
3133    
3134    checkpoint51a_post
3135    o added code for biogeochemistry package
3136      - new pkgs: dic, gchem
3137      - new subroutine in ptracers
3138    o modify code for biogeo packages
3139      - in model/src and pkg/ptracers
3140    
3141    checkpoint51
3142    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3143      - autodiff, ctrl, exf, grdchk, seaice
3144      kept separate packages
3145      - cost, ecco, obcs
3146    o updating verification/internal_wave, verification/lab_sea
3147      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3148    
3149    checkpoint50i_post
3150    o Preparing next differentiable checkpoint and sync
3151      of MAIN vs. ecco-branch
3152      - 1st step: this one is differentiable
3153      - 2nd step: next(! not this) checkpoint will have updated packages
3154                  from ecco-branch)
3155    
3156    checkpoint50h_post
3157    o new package "land": provide surface BC for AIM.
3158    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3159    o AIM: use true log-P extrapolation for near surface temp (= as in
3160        F.Molteni paper) ; update aim.5l_cs output.
3161    o New variable in PARM03 for more flexible pickups
3162    o somewhat cleaned package initialisation sequence for
3163      ctrl/ cost/ ecco/ in packages_... routines
3164    
3165    checkpoint50g_post
3166    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3167      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3168      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3169        made the default because of faster convergence than ADI
3170    
3171    checkpoint50f_post
3172    o exf totally restructured
3173      - replaced all exf_set_ routines by one generic exf_set_gen.F
3174        and made sure it's still differentiable
3175      - split exf_getffields.F into new exf_bulkformulae.F
3176      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3177      - updated adjoint/makefile and relevant verif. accordingly
3178    
3179    checkpoint50f_pre
3180     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3181          + change Evap over land. (update aim.5l_cs output)
3182     o added missing .cvsignores and made uniform across expts
3183     o changed configuration of tidal_basin_2d expt
3184     o added pkg/debug functions for tracing code in fatal crashes
3185     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3186     o new fn in pkg/monitor to stop model if solution grows too big
3187     o removed lots of single quotes from comments
3188    
3189    checkpoint50e_post
3190    o make KPP work with PTRACERS
3191     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3192       nearly a copy of kpp_transport_s
3193     - there is no analogue to SurfaceTendencyS, so I have to use
3194       gPtr(of the surface layer) instead
3195    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3196    checkpoint50e_pre
3197    
3198    checkpoint50d_post
3199    o change kpp output from multiple-record state files to single-record state
3200      files analogous to write_state.F
3201    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3202      analogous to the cg2d-related output.
3203    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3204      so that writing to internal file fn (with length 512) fails.
3205    checkpoint50d_pre
3206    
3207    checkpoint50c_post
3208    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3209    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3210    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3211    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3212    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3213    
3214    checkpoint50c_pre
3215    Merging from release1_p13:
3216    o bug fix for pkg/seaice dynamic solver
3217    o Added SEAICE_initialHEFF to pkg/seaice
3218    
3219    checkpoint50b_post
3220    o store u*,v* in gU,V instead of in guNm1,gvNm1
3221    o in order to put the momForcing out of the Adams-Bashforth:
3222      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3223      to timestep.F
3224    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3225    o re-generate output for highly sensitive test-exp:
3226       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3227    
3228    checkpoint50b_pre
3229    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3230    o corrected CPP option mismatch in exf_Bulk... functions for case
3231      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3232    
3233    checkpoint50a_post
3234    o Bug fix for merging between c50 and KPP.
3235      ikey was passed from thermodynamics to kpp_calc via
3236      common block rather than being recomputed in kpp_calc,
3237      in contradiction with new key itdkey.
3238      New key ikppkey created, and tamc.h headers updated.
3239    
3240    checkpoint50
3241    - 2nd step of merge with ecco-branch:
3242      merge changes in ecco-branch back into main trunk
3243    - bug fix in find_alpha
3244    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3245    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3246    - merged some sliced AD support routines
3247    
3248    checkpoint49
3249    merged from ecco-branch:
3250    o exf:
3251      - Enable initialisation of forcing fields to constant
3252        (runtime) values.
3253      - in exf_getffields.F
3254        Reduce i-/j-loop to interior domain, discarding overlaps.
3255        That also fixes wrong TAF-key computations for key_1, key_2
3256        with bulf formulae.
3257      - exf_init.F modify #ifdef for exf_init_evap
3258      - exf_getffieldrec.F, ctrl_getrec.F
3259        The following INT-usages are not safe:
3260          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3261          fldcount = int(fldsecs/fldperiod) + 1
3262        and were modified.
3263    o autodiff: checkpoint_lev...
3264      - updated storing for bulk formulae (some arrays were missing)
3265      - added state for seaice package
3266      - synchronized with main branch
3267    o DIVA:
3268      Modif.s in
3269      - the_main_loop.F
3270      - the_model_main.F
3271      and added cost_final_restore.F cost_final_store.F
3272      o With these changes, it is possible to fully separate
3273        the first forward run to compute the cost function (mdthe_main_loop)
3274        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3275        into separate model executions.
3276        This enables better tuning of DIVA to given queue sizes.
3277      o Loss of cost function value in consecutive DIVA runs is
3278        fixed by storing to 'costfinal' file.
3279      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3280        beginning/end of adjoint integration is accounted for.
3281      The current changes apply to TAF-1.4.26.
3282      TAF has one remaining bug, requiring one manual change
3283      (see MITgcm manual).
3284    o cal: synchronized between MAIN and ecco-branch
3285    
3286    checkpoint48i_post
3287    o Changes to restore differentiability of code w.r.t. previous tag
3288      (mostly adding new routines to make list and replacing
3289      pressure by totPhiHyd).
3290    o Updated and merged grdchk package
3291      - has both ADM and TLM checks
3292      - works for single- and multi-proc.
3293      - output cleaned
3294      - worked successfully for parallel DIVA
3295    o genmake:
3296      - Adding -platform=SP4
3297      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3298    o Modif. for DIVA:
3299      ctrl_unpack should not be called in intermediate DIVA interval.
3300      (similar thing would apply for active files such as
3301      tbar, sbar, psbar, which should not be reinitialised;
3302      only relevant for ecco-branch)
3303    
3304    checkpoint48h_post
3305    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3306    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3307    o Added SEAICE_initialHEFF to pkg/seaice
3308    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3309    
3310    checkpoint48g_post
3311    --- EOS:
3312    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3313      store total Potential in totPhyHyd for diagnostics & EOS.
3314    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3315    --- Pressure/geopotential gradient:
3316    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3317    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3318      ( changes results of global_ocean_pressure )
3319    o NLFS + z-coord.: add eta*Rho' contribution.
3320    o accurate phiHyd when using interface-W at the middle between 2 centers
3321     ( changes results of ideal_2D_oce )
3322    o includes r* 2nd term in potential gradient.
3323    
3324    checkpoint48f_post
3325    Merging from release1_p12:
3326    o Modifications for using pkg/exf with pkg/seaice
3327      - improved description of the various forcing configurations
3328      - added basic radiation bulk formulae to pkg/exf
3329      - units/sign fix for evap computation in exf_getffields.F
3330      - updated verification/global_with_exf/results/output.txt
3331    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3332      (SBO) core products, including oceanic mass, center-of-mass,
3333      angular, and bottom pressure (see pkg/sbo/README.sbo).
3334    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3335      to avoid negative values in shallow regions.
3336      - updated verification/natl_box/results/output.txt
3337      - updated verification/lab_sea/results/output.txt
3338    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3339    o Added useSingleCpuIO option (see PARAMS.h).
3340    o Updated useSingleCpuIO option in mdsio_writefield.F to
3341      work with multi-field files, e.g., for single-file pickup.
3342    o pkg/seaice:
3343      - bug fix in growth.F: QNET for no shortwave case
3344      - added HeffFile for specifying initial sea-ice thickness
3345      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3346    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3347      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3348    o pkg/seaice:
3349      - adjoint-friendly modifications
3350      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3351    
3352    checkpoint48e_post
3353    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3354    o dynamics: change definition of computational domain & adapt mom_fluxform
3355      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3356    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3357        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3358        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3359        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3360        inverted_barometer solid-body.cs-32x32x1
3361      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3362    
3363    checkpoint48d_post
3364    o in preparation for r*:
3365     a) use pre-computed gradient of hydrostatic potential:
3366        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3367     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3368        => affects results of glob_oce_pressure (different truncation error)  
3369      update output.txt of ideal_2D_oce & global_ocean_pressure
3370    
3371    checkpoint48d_pre
3372    o in preparation for r*:
3373      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3374      pass the 2 comp. of the grad. as arguments to momentum S/R.
3375      but for the moment, only used if it does not change the results.
3376    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3377    
3378    checkpoint48c_post
3379    Modifications in treatment of initial flux forcing controls
3380    to avoid extra storing of flux fields.
3381    
3382    checkpoint48c_pre
3383    o Added tidal_basin_2d experiment (currently 1D!)
3384    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3385    
3386    checkpoint48b_post
3387    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3388     (modification to pressure gradient not yet implemented)
3389    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3390      (for U & V) that are used for vertical advection of momentum.
3391    
3392    checkpoint48a_post
3393    o In preparation for r*, use temp. array to compute vertical transport
3394       in flux-form momentum pkg. => change results of few test-exp.
3395      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3396                        lab_sea, natl_box & plume_on_slope
3397    
3398    checkpoint48
3399    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3400    
3401  checkpoint47j_post  checkpoint47j_post
3402  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3403  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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